Sag resistant ceiling panel
CA 1308227 C · Owner: Menchetti, Robert J. · Inventors: Menchetti, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ceiling panel, in a drop ceiling formed from, a relatively large ceiling board and at least one reinforcing metal channel affixed to the board top side in, which the channel has at least one opening shaped to form a tongue. The tongue extends into an opening on a metal plate which is mechanically affixed to the top of the board, such as by a plurality of tangs which penetrate the back of the board.
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 October 6, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 2009.
- 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.