Combination flashlight/lantern electrical continuity tester
CA 2104725 C · Owner: Shershen, Eugene D. · Inventors: Shershen, Eugene D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improvement in a continuity tester is provided in a combination flashlight (or, lantern)/electrical continuity tester having an insulated body and a (flashlight) bulb and, batteries in series circuit. The improved continuity tester which is formed in the, flashlight (or lantern) body, includes an entry site of a particular configuration into the, interior of the body. The testing means includes a pair of electricallyconductive strips, each strip having a contact portion which is adjacent to the body entry site and which, penetrates into the interior of the body. Each strip is also in electrical contact with one, end of the series circuit. The shape of the entry site i.e. the size, …
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 August 24, 1993 and granted March 14, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2015.
- 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.