CA392497A - Dispositif de levage automatique de porte - Google Patents

Dispositif de levage automatique de porte

Info

Publication number
CA392497A
CA392497A CA392497A CA392497DA CA392497A CA 392497 A CA392497 A CA 392497A CA 392497 A CA392497 A CA 392497A CA 392497D A CA392497D A CA 392497DA CA 392497 A CA392497 A CA 392497A
Authority
CA
Canada
Prior art keywords
lift device
door pre
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
CA392497A
Other languages
English (en)
Inventor
H. Morgan David
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.)
Truscon Steel Co
Original Assignee
Truscon Steel Co
Publication date
Application granted granted Critical
Publication of CA392497A publication Critical patent/CA392497A/fr
Expired legal-status Critical Current

Links

CA392497A Dispositif de levage automatique de porte Expired CA392497A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA392497T

Publications (1)

Publication Number Publication Date
CA392497A true CA392497A (fr) 1940-11-12

Family

ID=35400020

Family Applications (1)

Application Number Title Priority Date Filing Date
CA392497A Expired CA392497A (fr) Dispositif de levage automatique de porte

Country Status (1)

Country Link
CA (1) CA392497A (fr)

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