Structure for a signal reflector
CA 2028237 A1 · Owner: Sun, Chih-Kuo · Inventors: Sun, Chih-Kuo; Sun, Chih-Chuan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A signal reflector rotatably mounted and is rotatable by wind or breeze action. The reflector comprises a supporting frame, a reflecting plate with a retro-reflective sheet mounted on at least one surface of the plate, and a pair of guide walls projected at the edge of the reflecting plate. Any incident light of a light source falling onto the retro-reflective sheet will be reflected in a flashing manner.
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 October 25, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 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.
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.