Expired Canadian patentCanada
Drive system for a multiplicity of cables for the installation of a synchronous transportation system, and automatic control method for synchrously driving said cables
CA 1284306 C · Owner: Bertrand, Jean-Jacques · Inventors: Bertrand, Jean-Jacques
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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 May 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 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.
FiledMay 26, 1988
GrantedMay 21, 1991
Term endedMay 21, 2008
Patent numberCA 1284306 C
Classification (IPC)B61B12/10 +1 more
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.