CA216945A - Dispositif d'arret et de fermeture de porte - Google Patents

Dispositif d'arret et de fermeture de porte

Info

Publication number
CA216945A
CA216945A CA216945A CA216945DA CA216945A CA 216945 A CA216945 A CA 216945A CA 216945 A CA216945 A CA 216945A CA 216945D A CA216945D A CA 216945DA CA 216945 A CA216945 A CA 216945A
Authority
CA
Canada
Prior art keywords
door closing
checking means
checking
door
closing
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
CA216945A
Other languages
English (en)
Inventor
Norman Hall George
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 CA216945A publication Critical patent/CA216945A/fr
Expired legal-status Critical Current

Links

CA216945A Dispositif d'arret et de fermeture de porte Expired CA216945A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA216945T

Publications (1)

Publication Number Publication Date
CA216945A true CA216945A (fr) 1922-03-21

Family

ID=35111389

Family Applications (1)

Application Number Title Priority Date Filing Date
CA216945A Expired CA216945A (fr) Dispositif d'arret et de fermeture de porte

Country Status (1)

Country Link
CA (1) CA216945A (fr)

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