CA570303A - Door-operating system - Google Patents

Door-operating system

Info

Publication number
CA570303A
CA570303A CA570303A CA570303DA CA570303A CA 570303 A CA570303 A CA 570303A CA 570303 A CA570303 A CA 570303A CA 570303D A CA570303D A CA 570303DA CA 570303 A CA570303 A CA 570303A
Authority
CA
Canada
Prior art keywords
door
operating system
operating
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
CA570303A
Other languages
French (fr)
Inventor
E. Kunzl Andrew
L. West George
M. Brown Glenwood
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.)
Pittsburgh Chemical Co
Original Assignee
Pittsburgh Chemical Co
Publication date
Application granted granted Critical
Publication of CA570303A publication Critical patent/CA570303A/en
Expired legal-status Critical Current

Links

CA570303A Door-operating system Expired CA570303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA570303T

Publications (1)

Publication Number Publication Date
CA570303A true CA570303A (en) 1959-02-10

Family

ID=35742847

Family Applications (1)

Application Number Title Priority Date Filing Date
CA570303A Expired CA570303A (en) Door-operating system

Country Status (1)

Country Link
CA (1) CA570303A (en)

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