CA704573A - Motor operated fire doors with automatic door release - Google Patents

Motor operated fire doors with automatic door release

Info

Publication number
CA704573A
CA704573A CA704573A CA704573DA CA704573A CA 704573 A CA704573 A CA 704573A CA 704573 A CA704573 A CA 704573A CA 704573D A CA704573D A CA 704573DA CA 704573 A CA704573 A CA 704573A
Authority
CA
Canada
Prior art keywords
automatic door
motor operated
fire doors
door release
operated fire
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
CA704573A
Inventor
B. Clark Henry
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 CA704573A publication Critical patent/CA704573A/en
Expired legal-status Critical Current

Links

CA704573A Motor operated fire doors with automatic door release Expired CA704573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA704573T

Publications (1)

Publication Number Publication Date
CA704573A true CA704573A (en) 1965-03-02

Family

ID=36018247

Family Applications (1)

Application Number Title Priority Date Filing Date
CA704573A Expired CA704573A (en) Motor operated fire doors with automatic door release

Country Status (1)

Country Link
CA (1) CA704573A (en)

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