Door frame structure having quick mounting hinge means
CA 1115134 A · Owner: United States Gypsum Company · Inventors: Cecil, Eugene F. (Deceased)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A quickly assembled door frame formed of sheet metal and having a a generally U-shaped cross-section one of the, frame members being adapted to mount a hinge having a portion embossed to provide a recess to receive a plate of the hinge, a plurality of slots provided in a side wall and, a hinge anchor plate having engagement tabs adapted to be inserted into the slots and having threaded apertures adapted to engage screws engaging the hinge plate and passing through apertures provided in the frame member. In an improved embodiment secondary embossments are provided in the frame member defining alignment channels and the hinge, anchor plate is provided with guide tabs adapted to be received …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.