Fuse with metallic state indicator
CA 2472829 C · Owner: Ackermann, John Marvin · Inventors: Ackermann, John Marvin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuse include an insulative body, a primary fuse element extending within the body, a fuse state indicator extending on an exterior surface of the body and , electrically connected in parallel with the primary fuse element and first , and second , ferrules coupled to opposing ends of the fuse body and electrically connecting the , primary fuse element and the fuse state indicator. At least one of the ferrules includes , a recessed contact area establishing electrical connection to the fuse state indicator.
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 July 2, 2004 and granted April 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2026.
- 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.