A bridge for a violin or viola shoulder rest
CA 2262290 C · Owner: The Kun Shoulder Rest Inc. · Inventors: Farha, Juliana
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosed bridge (10) of a violin or viola shoulder rest is made from a laminate of wood veneers (23- 29) the grain of which alternates generally at right angles to each other. In the embodiment disclosed the number of veneers is seven. The top veneer (23) and the bottom veneer (29) have their grain oriented generally longitudinally of the bridge (10).
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 February 22, 1999 and granted October 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 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.