Intermediate floor
CA 1290916 C · Owner: Schiffer, Henry · Inventors: Schiffer, Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An intermediate floor which shields a cementitious wooden, or tile top floor (21) from the cracking of the original floor and comprises an asphaltic layer (12) having on its upper surface finely divided stone (13) and an open mesh layer (22) on the stone layer. Where the original floor is concrete, the mesh layer is flexible plastic. Where the original floor is wood the mesh layer is galvanized metal, staples being provided to hold the asphalt and mesh layers on the original floor.
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 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.