CA577371A - Door operation and control - Google Patents

Door operation and control

Info

Publication number
CA577371A
CA577371A CA577371A CA577371DA CA577371A CA 577371 A CA577371 A CA 577371A CA 577371 A CA577371 A CA 577371A CA 577371D A CA577371D A CA 577371DA CA 577371 A CA577371 A CA 577371A
Authority
CA
Canada
Prior art keywords
control
door operation
door
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
CA577371A
Other languages
French (fr)
Inventor
E. Karp Martin
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.)
National Pneumatic Co Inc
Original Assignee
National Pneumatic Co Inc
Publication date
Application granted granted Critical
Publication of CA577371A publication Critical patent/CA577371A/en
Expired legal-status Critical Current

Links

CA577371A Door operation and control Expired CA577371A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA577371T

Publications (1)

Publication Number Publication Date
CA577371A true CA577371A (en) 1959-06-09

Family

ID=35753230

Family Applications (1)

Application Number Title Priority Date Filing Date
CA577371A Expired CA577371A (en) Door operation and control

Country Status (1)

Country Link
CA (1) CA577371A (en)

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