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CA399759A - Door control - Google Patents

Door control

Info

Publication number
CA399759A
CA399759A CA399759A CA399759DA CA399759A CA 399759 A CA399759 A CA 399759A CA 399759 A CA399759 A CA 399759A CA 399759D A CA399759D A CA 399759DA CA 399759 A CA399759 A CA 399759A
Authority
CA
Canada
Prior art keywords
door control
door
control
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
CA399759A
Other languages
French (fr)
Inventor
R. Beal Francis
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA399759A publication Critical patent/CA399759A/en
Expired legal-status Critical Current

Links

CA399759A Door control Expired CA399759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA399759T

Publications (1)

Publication Number Publication Date
CA399759A true CA399759A (en) 1941-10-07

Family

ID=35410205

Family Applications (1)

Application Number Title Priority Date Filing Date
CA399759A Expired CA399759A (en) Door control

Country Status (1)

Country Link
CA (1) CA399759A (en)

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