Shoulder rest for violin or like instrument
CA 2284807 C · Owner: Hvezda, Jaroslav Marius · Inventors: Hvezda, Jaroslav Marius
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shoulder rest for an instrument such as a violin or viola comprising an elongated support suitable for resting on a user's shoulder, ends of the support having attachment devices for holding the instrument spaced away from the support. The attachment devices each include a base part having a socket portion with an internal cavity, and a pedestal including a nut member rotatable within the cavity and having a threaded bore and, a normally upright threaded stem mounted in the threaded bore and carrying a clamping member engageable with the instrument back. The nut member has hand manipulatable means allowing it to be rotated manually within the cavity about the bore axis to raise or lower …
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 September 30, 1999 and granted October 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 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.