Tail light adapter between a towing vehicle and trailer
CA 2271303 C · Owner: Johnson, Richard · Inventors: Bryant, Richard C.; Johnson, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrical taillight adapter circuit (6) interfaces a three-lamp vehicle lighting circuitry (2) with a two-lamp trailer lighting circuitry (6). The vehicle lighting circuitry primarily includes a group (10) of three right hand lamps (20, 22 24) and a group (12) three of , left-hand lamps (12). These lamps operate in response to signals generated by the vehicle operator, and are electrically connected to the adapter circuit. The trailer circuit generally includes a group (14) of two right hand lamps (34, 36) and a group (16) of two left-hand lamps (35 37). The adapter, circuitry receives electrical signals from the vehicle circuit (2) processes, them, and outputs power to the appropriate …
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 May 7, 1999 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2021.
- 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.