Window frame assembly
CA 1324536 C · Owner: Plastmo Ltd. · Inventors: Harbom, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A window frame assembly includes a frame member having a longitudinally extending channel with a bottom surface and front and rear walls. Each wall has a longitudinally extending recess adjacent to the bottom surface. The window frame assembly also has a plurality of support members for a window unit, the support members being longitudinally spaced along the channel. Each support member rests on the bottom surface of the channel and has front and rear longitudinally extending projections in snapping engagement in the recesses in the front and rear walls of the channel.
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 November 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 2010.
- 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.