Waterproof and dustproof push switch
CA 2019822 C · Owner: Kosuga, Yuji · Inventors: Takano, Tsunesuke; Sinzawa, Kouichi; Kosuga, Yuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A push switch which can be easily assembled comprising: an insulating cylindrical body; fixed contacts disposed so as to confront confronting-inner walls of the cylindrical body; a substantially inverted V-shaped movable contact which comes in contact with the fixed contacts; a pushing body for covering the movable contact with a spring interposed therebetween; and a fastening elastic member for fastening the pushing body to the cylindrical body.
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 June 26, 1990 and granted May 3, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 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.