BE866483A - Dispositif de conduction de gaz et profiles creux pour sa realisation - Google Patents

Dispositif de conduction de gaz et profiles creux pour sa realisation

Info

Publication number
BE866483A
BE866483A BE187201A BE187201A BE866483A BE 866483 A BE866483 A BE 866483A BE 187201 A BE187201 A BE 187201A BE 187201 A BE187201 A BE 187201A BE 866483 A BE866483 A BE 866483A
Authority
BE
Belgium
Prior art keywords
realization
conduction device
hollow profiles
gas conduction
gas
Prior art date
Application number
BE187201A
Other languages
English (en)
Original Assignee
Leistritz Hans Karl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19772718944 external-priority patent/DE2718944A1/de
Priority claimed from DE19772719513 external-priority patent/DE2719513A1/de
Priority claimed from DE19772719634 external-priority patent/DE2719634A1/de
Priority claimed from DE19772720558 external-priority patent/DE2720558A1/de
Priority claimed from DE19772721956 external-priority patent/DE2721956A1/de
Priority claimed from DE19772722422 external-priority patent/DE2722422A1/de
Priority claimed from DE19772727728 external-priority patent/DE2727728A1/de
Priority claimed from DE19772730007 external-priority patent/DE2730007A1/de
Priority claimed from DE19772730480 external-priority patent/DE2730480A1/de
Priority claimed from DE19772733443 external-priority patent/DE2733443A1/de
Priority claimed from DE19772747655 external-priority patent/DE2747655A1/de
Priority claimed from DE19772747959 external-priority patent/DE2747959A1/de
Application filed by Leistritz Hans Karl filed Critical Leistritz Hans Karl
Publication of BE866483A publication Critical patent/BE866483A/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with exhaust gas flow passages
    • F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with exhaust gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/023—Helmholtz resonators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/16—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/10—Tubes having non-circular cross section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/18—Structure or shape of exhaust gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/26—Tubes being formed by extrusion, drawing or rolling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes
    • F01N2490/04—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet only in one direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/14—Dead or resonance chambers connected to gas flow tube by relatively short side-tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/20—Chambers being formed inside the exhaust pipe without enlargement of the cross section of the pipe, e.g. resonance chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2510/00—Surface coverings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/06—Aluminium or alloys thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
BE187201A 1977-04-28 1978-04-27 Dispositif de conduction de gaz et profiles creux pour sa realisation BE866483A (fr)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
DE19772718944 DE2718944A1 (de) 1975-03-12 1977-04-28 Innenkuehlrohr mit einfachem und mehrfachem hohlkammermantel
DE19772719513 DE2719513A1 (de) 1977-05-02 1977-05-02 Aluminiumleitungen mit einfachem hohlkammermantel insbesondere bei schalldaempfern von brennkraftmaschinen
DE19772719634 DE2719634A1 (de) 1977-05-02 1977-05-03 Thermische abgasfuehrung
DE19772720558 DE2720558A1 (de) 1977-05-02 1977-05-07 Thermische abgasfuehrung
DE19772721956 DE2721956A1 (de) 1977-05-03 1977-05-14 Thermische abgasfuehrung
DE19772722422 DE2722422A1 (de) 1972-04-29 1977-05-18 Thermische gasfuehrung im verbund keramik/metalle bei nachverbrennungsanlagen
DE19772727728 DE2727728A1 (de) 1977-04-28 1977-06-21 Luftdurchsatz in ringraum-hohlrippen
DE19772730007 DE2730007A1 (de) 1977-05-02 1977-07-02 Thermische abgasfuehrung
DE19772730480 DE2730480A1 (de) 1977-05-03 1977-07-06 Thermische abgasfuehrung
DE19772733443 DE2733443A1 (de) 1977-05-03 1977-07-25 Thermische abgasfuehrung
DE19772747655 DE2747655A1 (de) 1977-07-25 1977-10-24 Thermische abgasfuehrung
DE19772747959 DE2747959A1 (de) 1977-07-02 1977-10-26 Thermische abgasfuehrung zusatz 9

Publications (1)

Publication Number Publication Date
BE866483A true BE866483A (fr) 1978-08-14

Family

ID=27582916

Family Applications (1)

Application Number Title Priority Date Filing Date
BE187201A BE866483A (fr) 1977-04-28 1978-04-27 Dispositif de conduction de gaz et profiles creux pour sa realisation

Country Status (5)

Country Link
US (1) US4233812A (fr)
JP (1) JPS5416041A (fr)
BE (1) BE866483A (fr)
GB (1) GB1603962A (fr)
IT (1) IT1095302B (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816313U (ja) * 1981-07-24 1983-02-01 三恵技研工業株式会社 内燃機関の排気装置
US4504238A (en) * 1982-12-23 1985-03-12 Brunswick Corporation Fluid cooler for marine drives
JPS60137105U (ja) * 1984-02-24 1985-09-11 アイシン精機株式会社 マフラ−
US5063994A (en) * 1990-06-26 1991-11-12 Level 1 Technologies, Inc. Reflux fluid heated patient line
US5390500A (en) * 1992-12-29 1995-02-21 Praxair Technology, Inc. Cryogenic fluid vaporizer system and process
DE19809859A1 (de) * 1998-03-07 1999-09-09 Mann & Hummel Filter Vorrichtung zur Kühlung von Gasen
US5996734A (en) * 1998-03-11 1999-12-07 Outboard Marine Corporation Air intake silencer for a two-stroke engine
US6438936B1 (en) 2000-05-16 2002-08-27 Elliott Energy Systems, Inc. Recuperator for use with turbine/turbo-alternator
US6622482B2 (en) * 2001-06-27 2003-09-23 Environmental Control Corporation Combined catalytic muffler
JP3652635B2 (ja) * 2001-10-15 2005-05-25 核燃料サイクル開発機構 中間熱媒体を有する熱交換器
CN1589366A (zh) * 2001-11-20 2005-03-02 挪威海德罗公开有限公司 排气系统及其生产方法
US7349123B2 (en) * 2004-03-24 2008-03-25 Lexmark International, Inc. Algorithms and methods for determining laser beam process direction position errors from data stored on a printhead
DE102007013524A1 (de) * 2007-03-21 2008-09-25 Robert Bosch Gmbh Dosiermodul mit verbesserten akustischen Eigenschaften
US7971432B2 (en) * 2007-07-13 2011-07-05 Paccar Inc Flow diffuser for exhaust pipe
US20090014235A1 (en) * 2007-07-13 2009-01-15 Paccar Inc Flow diffuser for exhaust pipe
US8046989B2 (en) * 2007-11-14 2011-11-01 Paccar Inc Cooling device for high temperature exhaust
AT515887A1 (de) 2014-05-20 2015-12-15 Ge Jenbacher Gmbh & Co Og Verfahren zum Anfahren eines Thermoreaktors
AT515898B1 (de) 2014-05-20 2017-09-15 Ge Jenbacher Gmbh & Co Og Verfahren zur Abgasnachbehandlung
AT517670B1 (de) 2015-09-04 2023-03-15 Innio Jenbacher Gmbh & Co Og Abgasnachbehandlungsvorrichtung
CN105569774A (zh) * 2015-12-19 2016-05-11 北海创思电子科技产业有限公司 用于发动机的消声器
DE102016202056B3 (de) * 2016-02-11 2017-03-16 Cisma Solutions Aps Abgasauslasssystem für ein Kraftfahrzeug, Kraftfahrzeug mit einem solchen Abgasauslasssystem sowie Verfahren zur Herstellung eines Abgasauslasssystems
CN107355281B (zh) * 2017-07-05 2019-11-29 重庆长野汽车配件有限公司 一种耐腐蚀汽车尾气静音装置
US10981108B2 (en) 2017-09-15 2021-04-20 Baker Hughes, A Ge Company, Llc Moisture separation systems for downhole drilling systems
CN110006274A (zh) * 2018-01-04 2019-07-12 日本碍子株式会社 热交换部件及热交换器
US11920874B2 (en) * 2021-02-09 2024-03-05 Ngk Insulators, Ltd. Heat exchange member, heat exchanger and heat conductive member

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR961667A (fr) * 1950-05-17
US1447037A (en) * 1921-06-23 1923-02-27 John H B Rea Muffler for gas engines
US1514441A (en) * 1923-10-25 1924-11-04 Arthur J Culp Exhaust trap
US1849086A (en) * 1929-08-03 1932-03-15 Aerol Engine Corp Air-cooled cylinder for internal combustion engines
FR1243325A (fr) * 1959-12-23 1960-10-07 Appareil <<silencieux>> destiné à équiper les tubulures d'échappement des moteurs à explosion
GB920397A (en) * 1960-06-18 1963-03-06 Daimler Benz Ag Improvements relating to exhaust silencers for super-charged engines
US3475922A (en) * 1967-07-31 1969-11-04 Westinghouse Electric Corp Liquid cooling chamber
US3642094A (en) * 1969-11-26 1972-02-15 Raymond W Yancey Muffler construction
US3835645A (en) * 1973-02-08 1974-09-17 J Zoleta Method and system for reducing pollutants from engine exhaust

Also Published As

Publication number Publication date
IT1095302B (it) 1985-08-10
IT7822649A0 (it) 1978-04-24
JPS5416041A (en) 1979-02-06
GB1603962A (en) 1981-12-02
US4233812A (en) 1980-11-18

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: LEISTRITZ HANS K.

Effective date: 19870430