DE3931056C2 - - Google Patents

Info

Publication number
DE3931056C2
DE3931056C2 DE19893931056 DE3931056A DE3931056C2 DE 3931056 C2 DE3931056 C2 DE 3931056C2 DE 19893931056 DE19893931056 DE 19893931056 DE 3931056 A DE3931056 A DE 3931056A DE 3931056 C2 DE3931056 C2 DE 3931056C2
Authority
DE
Germany
Prior art keywords
manhole cover
articulated
protective grille
inspection
struts
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 - Lifetime
Application number
DE19893931056
Other languages
German (de)
English (en)
Other versions
DE3931056A1 (de
Inventor
Helmut 4408 Duelmen De Naue
Achim 4320 Hattingen De Potraz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19893931056 priority Critical patent/DE3931056A1/de
Priority to DE8911694U priority patent/DE8911694U1/de
Publication of DE3931056A1 publication Critical patent/DE3931056A1/de
Application granted granted Critical
Publication of DE3931056C2 publication Critical patent/DE3931056C2/de
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/01—Trap-doors

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
DE19893931056 1989-09-18 1989-09-18 Schutzgitter fuer einen inspektionsschacht Granted DE3931056A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19893931056 DE3931056A1 (de) 1989-09-18 1989-09-18 Schutzgitter fuer einen inspektionsschacht
DE8911694U DE8911694U1 (de) 1989-09-18 1989-09-18 Schutzgitter für einen Inspektionsschacht

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893931056 DE3931056A1 (de) 1989-09-18 1989-09-18 Schutzgitter fuer einen inspektionsschacht

Publications (2)

Publication Number Publication Date
DE3931056A1 DE3931056A1 (de) 1991-03-28
DE3931056C2 true DE3931056C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-07-11

Family

ID=6389628

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893931056 Granted DE3931056A1 (de) 1989-09-18 1989-09-18 Schutzgitter fuer einen inspektionsschacht

Country Status (1)

Country Link
DE (1) DE3931056A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1787944U (de) * 1959-02-20 1959-04-30 Georg Koehler Spiel Und Metall Spielzeug-gaenseliesel.
FR2115757A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1970-11-27 1972-07-07 Caviglia Serge
US4266380A (en) * 1979-02-09 1981-05-12 Christy Concrete Products, Inc. High strength cover for underground utility box
DE3423184C2 (de) * 1984-06-22 1994-11-03 Albert Stewing Unterflurstation für Kabelverzweigereinrichtungen der Fernmeldetechnik

Also Published As

Publication number Publication date
DE3931056A1 (de) 1991-03-28

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee