Expired Canadian patentCanada
Method of violin construction and a violin
CA 2135652 C · Owner: Mandreck, Collin · Inventors: Mandreck, Collin
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A violin characterized by a violin body proportioned so that a sum of digits for each measurement which one skilled in the art of violin construction would recognize to be critical when measured in millimetres, equals nine.
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 August 23, 1995 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 23, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 23, 1995
GrantedMarch 16, 1999
Term endedAugust 23, 2015
Patent numberCA 2135652 C
Classification (IPC)G10D1/02
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.