CA545027A - Signalling device for doors - Google Patents

Signalling device for doors

Info

Publication number
CA545027A
CA545027A CA545027A CA545027DA CA545027A CA 545027 A CA545027 A CA 545027A CA 545027 A CA545027 A CA 545027A CA 545027D A CA545027D A CA 545027DA CA 545027 A CA545027 A CA 545027A
Authority
CA
Canada
Prior art keywords
doors
signalling device
signalling
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
CA545027A
Other languages
French (fr)
Inventor
E. Worth William
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
Publication date
Application granted granted Critical
Publication of CA545027A publication Critical patent/CA545027A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C1/00—Building elements of block or other shape for the construction of parts of buildings
    • E04C1/42—Building elements of block or other shape for the construction of parts of buildings of glass or other transparent material

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
CA545027A Signalling device for doors Expired CA545027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA545027T

Publications (1)

Publication Number Publication Date
CA545027A true CA545027A (en) 1957-08-20

Family

ID=35702200

Family Applications (1)

Application Number Title Priority Date Filing Date
CA545027A Expired CA545027A (en) Signalling device for doors

Country Status (1)

Country Link
CA (1) CA545027A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339322A (en) * 1965-03-12 1967-09-05 Walter J Kraus Adjustable wall sleeve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339322A (en) * 1965-03-12 1967-09-05 Walter J Kraus Adjustable wall sleeve

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