Expired Canadian patentCanada
Pressure relief valve
CA 2091382 C · Owner: Schultz, Gary R. · Inventors: Runels, Thomas L.; Schultz, Gary R.; Freigang, Alan R.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve 59,61 is provided which selectively reduces pressure of tires 20,22 on a vehicle for reducing the overall height of the vehicle. The valve may be employed in vehicles having or not having CTI systems.
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
- Filed March 10, 1993 and granted May 25, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 10, 1993
GrantedMay 25, 1999
Term endedMarch 10, 2013
Patent numberCA 2091382 C
Classification (IPC)F16K17/04 +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.