Battery cover structure
CA 2329675 A1 · Owner: Terasawa, Dai · Inventors: Terasawa, Dai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A battery cover structure comprising an elastic sealing member having a largediameter, portion and a small-diameter portion the large-diameter portion forming a , peripheral flange portion around the small-diameter portion; and a rigid member joined to the elastic, sealing member and located on a side of the small-diameter portion remote from the large-, diameter portion, the battery cover adapted for attachment to a battery access hole in a, watch case by inserting the elastic sealing member in the hole and engaging the peripheral, flange portion with the case. Because of the rigidity imparted by the rigid member, the, battery cover structure is substantially free from the risk of …
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 December 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 2022.
- 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.