Expired Canadian patentCanada
Smoke generator
CA 2061913 C · Owner: Wenrich, William R. · Inventors: Ernst, James J.; Wenrich, William 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 smoke generator wherein vaporative properties of a liquid smoke agent are activated by a heated air flow through a venturi. The smoke generator includes an air compressor a heater, a venturi, a smoke fluid reservoir and a support.
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 February 26, 1992 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 26, 1992
GrantedDecember 14, 1999
Term endedFebruary 26, 2012
Patent numberCA 2061913 C
Classification (IPC)B05B1/24 +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.