Frame for door or window opening
CA 1264024 C · Owner: N.V. Nederlandse Metaalindustrie Polynorm · Inventors: Metz, Laurens
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Frame for door or window opening A frame element of U-shaped cross-section is clamped to a wall rim bounding an opening in a wall by means of two clamping jaws. Said clamping jaws are formed in a steel sheet bent over in its longitudinal direction and are profiled substantially throughout their lengths, so that with a small thickness of material the clamping jaws mainly derive their rigidity from their profile. The clamping jaws provide a mounting for the hinge support element for a door or window.
Read the whole patent
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 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 27, 2006.
- 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.