CA203982A - Fire door mechanism - Google Patents

Fire door mechanism

Info

Publication number
CA203982A
CA203982A CA203982A CA203982DA CA203982A CA 203982 A CA203982 A CA 203982A CA 203982 A CA203982 A CA 203982A CA 203982D A CA203982D A CA 203982DA CA 203982 A CA203982 A CA 203982A
Authority
CA
Canada
Prior art keywords
fire door
door mechanism
fire
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
CA203982A
Other languages
French (fr)
Inventor
W. Martin Frederick
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.)
Franklin Railway Supply Co
Original Assignee
Franklin Railway Supply Co
Publication date
Application granted granted Critical
Publication of CA203982A publication Critical patent/CA203982A/en
Expired legal-status Critical Current

Links

CA203982A Fire door mechanism Expired CA203982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA203982T

Publications (1)

Publication Number Publication Date
CA203982A true CA203982A (en) 1920-09-14

Family

ID=35078418

Family Applications (1)

Application Number Title Priority Date Filing Date
CA203982A Expired CA203982A (en) Fire door mechanism

Country Status (1)

Country Link
CA (1) CA203982A (en)

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