CA475659A - Structure de portes montantes - Google Patents

Structure de portes montantes

Info

Publication number
CA475659A
CA475659A CA475659DA CA475659A CA 475659 A CA475659 A CA 475659A CA 475659D A CA475659D A CA 475659DA CA 475659 A CA475659 A CA 475659A
Authority
CA
Canada
Prior art keywords
door construction
acting door
upward acting
upward
construction
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)
Inventor
Hans Olsen Henry
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.)
Crawford Door Co
Original Assignee
Henry Hans Olsen
Crawford Door Co
Publication date
Application granted granted Critical
Publication of CA475659A publication Critical patent/CA475659A/fr
Expired legal-status Critical Current

Links

CA475659D Structure de portes montantes Expired CA475659A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA475659T

Publications (1)

Publication Number Publication Date
CA475659A true CA475659A (fr) 1951-07-31

Family

ID=35609648

Family Applications (1)

Application Number Title Priority Date Filing Date
CA475659D Expired CA475659A (fr) Structure de portes montantes

Country Status (1)

Country Link
CA (1) CA475659A (fr)

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