CA209195A - Door controlling apparatus - Google Patents

Door controlling apparatus

Info

Publication number
CA209195A
CA209195A CA209195A CA209195DA CA209195A CA 209195 A CA209195 A CA 209195A CA 209195 A CA209195 A CA 209195A CA 209195D A CA209195D A CA 209195DA CA 209195 A CA209195 A CA 209195A
Authority
CA
Canada
Prior art keywords
controlling apparatus
door controlling
door
controlling
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
CA209195A
Other languages
French (fr)
Inventor
P. Dorl Walter
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 CA209195A publication Critical patent/CA209195A/en
Expired legal-status Critical Current

Links

CA209195A Door controlling apparatus Expired CA209195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA209195T

Publications (1)

Publication Number Publication Date
CA209195A true CA209195A (en) 1921-03-08

Family

ID=35102974

Family Applications (1)

Application Number Title Priority Date Filing Date
CA209195A Expired CA209195A (en) Door controlling apparatus

Country Status (1)

Country Link
CA (1) CA209195A (en)

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