CA424580A - Mecanisme de levage de porte - Google Patents

Mecanisme de levage de porte

Info

Publication number
CA424580A
CA424580A CA424580A CA424580DA CA424580A CA 424580 A CA424580 A CA 424580A CA 424580 A CA424580 A CA 424580A CA 424580D A CA424580D A CA 424580DA CA 424580 A CA424580 A CA 424580A
Authority
CA
Canada
Prior art keywords
lift mechanism
door lift
door
lift
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
CA424580A
Other languages
English (en)
Inventor
Ditchfield Frank
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.)
Youngstown Steel Door Co
Original Assignee
Youngstown Steel Door Co
Publication date
Application granted granted Critical
Publication of CA424580A publication Critical patent/CA424580A/fr
Expired legal-status Critical Current

Links

CA424580A Mecanisme de levage de porte Expired CA424580A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA424580T

Publications (1)

Publication Number Publication Date
CA424580A true CA424580A (fr) 1944-12-19

Family

ID=35535595

Family Applications (1)

Application Number Title Priority Date Filing Date
CA424580A Expired CA424580A (fr) Mecanisme de levage de porte

Country Status (1)

Country Link
CA (1) CA424580A (fr)

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