PL91777B1 - - Google Patents

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Publication number
PL91777B1
PL91777B1 PL1974175815A PL17581574A PL91777B1 PL 91777 B1 PL91777 B1 PL 91777B1 PL 1974175815 A PL1974175815 A PL 1974175815A PL 17581574 A PL17581574 A PL 17581574A PL 91777 B1 PL91777 B1 PL 91777B1
Authority
PL
Poland
Prior art keywords
outer ring
ring
inner ring
supports
stepped
Prior art date
Application number
PL1974175815A
Other languages
English (en)
Polish (pl)
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 filed Critical
Publication of PL91777B1 publication Critical patent/PL91777B1/pl

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Sewage (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
PL1974175815A 1973-12-28 1974-11-21 PL91777B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI734001A FI49536C (fi) 1973-12-28 1973-12-28 Suojuskansi tai -hattu maanalaisia vesiposteja, venttiilejä, hanoja, v iemäreitä ja sentapaisia varten.

Publications (1)

Publication Number Publication Date
PL91777B1 true PL91777B1 (de) 1977-03-31

Family

ID=8508799

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1974175815A PL91777B1 (de) 1973-12-28 1974-11-21

Country Status (5)

Country Link
DK (1) DK378874A (de)
FI (1) FI49536C (de)
NO (1) NO742720L (de)
PL (1) PL91777B1 (de)
SE (1) SE7408367L (de)

Also Published As

Publication number Publication date
DK378874A (de) 1975-08-18
SE7408367L (de) 1975-06-30
NO742720L (de) 1975-07-28
FI49536C (fi) 1975-07-10
FI49536B (de) 1975-04-01

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