Illuminated push button
CA 2030590 C · Owner: Trine Products Corp. · Inventors: Herron, William L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An illuminated electrical push button switch has a pair of spring contacts secured in a housing on either side of a miniature bulb. The contacts have inclined bifurcated ends that bear resiliently against the underside of the push button. Depressing the button causes the bifurcated contact ends to deform elastically and come together making electrical contact. The pigtail leads for the bulb are sandwiched between the contacts and a block portion of the housing all being held in, place by a screw that also functions as a binding post for the external wire connection.
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 November 23, 1990 and granted September 27, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 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.