CA52825A - Apparatus for automatically closing or opening doors, etc. - Google Patents

Apparatus for automatically closing or opening doors, etc.

Info

Publication number
CA52825A
CA52825A CA000052825A CA52825DA CA52825A CA 52825 A CA52825 A CA 52825A CA 000052825 A CA000052825 A CA 000052825A CA 52825D A CA52825D A CA 52825DA CA 52825 A CA52825 A CA 52825A
Authority
CA
Canada
Prior art keywords
automatically closing
opening doors
doors
opening
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
CA000052825A
Other languages
French (fr)
Inventor
Baron Alexander Von Der Ropp
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA52825A publication Critical patent/CA52825A/en
Expired legal-status Critical Current

Links

CA000052825A 1896-06-16 1896-06-16 Apparatus for automatically closing or opening doors, etc. Expired CA52825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA52825T 1896-06-16

Publications (1)

Publication Number Publication Date
CA52825A true CA52825A (en) 1896-07-06

Family

ID=45169364

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000052825A Expired CA52825A (en) 1896-06-16 1896-06-16 Apparatus for automatically closing or opening doors, etc.

Country Status (1)

Country Link
CA (1) CA52825A (en)

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