Expired Canadian patentCanada
Cellular radiocommunication system
CA 2128809 C · Owner: Dupuy, Pierre · Inventors: Dupuy, Pierre
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
- Filed July 26, 1994 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 26, 1994
GrantedNovember 16, 1999
Term endedJuly 26, 2014
Patent numberCA 2128809 C
Classification (IPC)H04B7/26 +2 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.