Damper clip extension
CA 2304996 C · Owner: Bluestone, Richard A. · Inventors: Bluestone, Richard A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An extension assembly for use with a damper assembly and for extending the damper assembly control shaft. The extension assembly is provided, for coupling of a handle to the control shaft and includes an extension member, a, locking member and a securing member. The extension member includes a connecting portion having a closed end and an open end. The open end includes a, bore dimensioned to operatively receive the control shaft. The extension member, further includes a shaft portion extending longitudinally from the closed end of the, connecting portion. The shaft portion includes two parallel flat sides merging transversely with two opposite arcuate sides and dimensioned to be …
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 11, 2000 and granted July 1, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 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.