Expired Canadian patentCanada
Winterized road signs
CA 2008419 C · Owner: Dorus, Vasile · Inventors: Dorus, Vasile
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The way the road signs are at the present time during the winter storms they get covered with snow making it imposible to see what the signs say. In this invention the road signs are concepted to permit the snow and the wind to go through the sign.
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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 January 24, 1990 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 24, 1990
GrantedJuly 25, 2000
Term endedJanuary 24, 2010
Patent numberCA 2008419 C
Classification (IPC)G09F7/00 +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.