FR863714A - Filtres électromécaniques - Google Patents

Filtres électromécaniques

Info

Publication number
FR863714A
FR863714A FR863714DA FR863714A FR 863714 A FR863714 A FR 863714A FR 863714D A FR863714D A FR 863714DA FR 863714 A FR863714 A FR 863714A
Authority
FR
France
Prior art keywords
electromechanical filters
electromechanical
filters
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT SA
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
Application filed by Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Application granted granted Critical
Publication of FR863714A publication Critical patent/FR863714A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/48—Coupling means therefor
    • H03H9/50—Mechanical coupling means

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR863714D 1939-03-08 1940-03-06 Filtres électromécaniques Expired FR863714A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US260544A US2231404A (en) 1939-03-08 1939-03-08 Electromechanical wave filter

Publications (1)

Publication Number Publication Date
FR863714A true FR863714A (fr) 1941-04-08

Family

ID=22989589

Family Applications (1)

Application Number Title Priority Date Filing Date
FR863714D Expired FR863714A (fr) 1939-03-08 1940-03-06 Filtres électromécaniques

Country Status (3)

Country Link
US (1) US2231404A (fr)
FR (1) FR863714A (fr)
GB (1) GB540171A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB686016A (en) * 1949-03-30 1953-01-14 Rca Corp Improvements in electromechanical filters
US2622168A (en) * 1949-09-08 1952-12-16 Westinghouse Air Brake Co Frequency responsive relay
US2617882A (en) * 1950-05-29 1952-11-11 Rca Corp Maximal flatness filter
US2753529A (en) * 1955-07-28 1956-07-03 Rca Corp Electromechanical resonator

Also Published As

Publication number Publication date
GB540171A (en) 1941-10-08
US2231404A (en) 1941-02-11

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