CA314781A - Device for opening and closing doors - Google Patents

Device for opening and closing doors

Info

Publication number
CA314781A
CA314781A CA314781A CA314781DA CA314781A CA 314781 A CA314781 A CA 314781A CA 314781 A CA314781 A CA 314781A CA 314781D A CA314781D A CA 314781DA CA 314781 A CA314781 A CA 314781A
Authority
CA
Canada
Prior art keywords
opening
closing doors
doors
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
CA314781A
Other languages
French (fr)
Inventor
Steele Westover Marvin
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 CA314781A publication Critical patent/CA314781A/en
Expired legal-status Critical Current

Links

CA314781A Device for opening and closing doors Expired CA314781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA314781T

Publications (1)

Publication Number Publication Date
CA314781A true CA314781A (en) 1931-09-01

Family

ID=35274109

Family Applications (1)

Application Number Title Priority Date Filing Date
CA314781A Expired CA314781A (en) Device for opening and closing doors

Country Status (1)

Country Link
CA (1) CA314781A (en)

Similar Documents

Publication Publication Date Title
CA314781A (en) Device for opening and closing doors
CA319196A (en) Door opening and closing device
CA298557A (en) Opening and closing device for doors or windows
CA326301A (en) Garage door opening and closing device
CA300454A (en) Opening and closing device for mine doors
CA314118A (en) Closing, locking and opening device for windows
CA305354A (en) Door closing device
CA238162A (en) Door opening and closing apparatus
CA347120A (en) Garage door opening and closing device
CA290967A (en) Gate opening and closing device
CA243259A (en) Device for opening and closing sliding doors
CA322108A (en) Window closing device
CA333852A (en) Valve opening and closing device
CA270630A (en) Automatic gate opening and closing device
CA294584A (en) Chuck closing and opening mechanism
CA249452A (en) Means for opening and closing windows
AU2479735A (en) Improvements in means for opening and closing doors
AU104729B2 (en) An improved means for opening and closing gates and the like
CA326157A (en) Door opening apparatus
AU267831A (en) Self closing gate
CA348999A (en) Door closing and checking device
AU100312B2 (en) Gravitational self opening and closing gate
AU112929B2 (en) Apparatus for opening and closing hinged doors
AU12831A (en) Automatic door opening apparatus
CA373626A (en) Door opening and closing device