CA420843A - Contrepoids de porte montante - Google Patents

Contrepoids de porte montante

Info

Publication number
CA420843A
CA420843A CA420843A CA420843DA CA420843A CA 420843 A CA420843 A CA 420843A CA 420843 A CA420843 A CA 420843A CA 420843D A CA420843D A CA 420843DA CA 420843 A CA420843 A CA 420843A
Authority
CA
Canada
Prior art keywords
swing
counterbalancing means
door counterbalancing
door
counterbalancing
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
CA420843A
Other languages
English (en)
Inventor
Malcolm Robinson 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.)
Stanley Works
Original Assignee
Stanley Works
Publication date
Application granted granted Critical
Publication of CA420843A publication Critical patent/CA420843A/fr
Expired legal-status Critical Current

Links

CA420843A Contrepoids de porte montante Expired CA420843A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA420843T

Publications (1)

Publication Number Publication Date
CA420843A true CA420843A (fr) 1944-06-13

Family

ID=35531784

Family Applications (1)

Application Number Title Priority Date Filing Date
CA420843A Expired CA420843A (fr) Contrepoids de porte montante

Country Status (1)

Country Link
CA (1) CA420843A (fr)

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