Lamp for vehicle lighting system
CA 2066955 A1 · Owner: Hopkins Manufacturing Corporation · Inventors: Gerencser, Steven E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lamp provides brake and turn signal functions for a towed vehicle while isolating the electrical lighting system of the towed vehicle from the electrical lighting system of a towing vehicle. The lamp includes a bulb, having an interior cavity, mounted to a bulb base. The bulb base is received in a lamp receptacle on the towed vehicle. The bulb base includes a positive contact region and a negative contact region. The positive and negative contact regions on the bulb base are connected to the electrical lighting system of the towed vehicle. At least one filament having a negative lead and a positive lead is located within the bulb cavity. The negative lead of the filament is connected to …
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 April 23, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2014.
- 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.