String construction and method of making same
CA 1081557 A · Owner: Ashaway Line & Twine Mfg. Co. · Inventors: Crandall, Julian T.; Crandall, Steven J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Julian T. Crandall, Steven J. Crandall STRING CONSTRUCTION AND, METHOD OF MAKING SAME Abstract of the Disclosure, A string construction for athletic rackets musical instruments and the like, comprising a thermoplastic core coated with a cationic lubricating agent, and a second coating comprising a thermoplastic resin surrounding and bonded to said first coating.
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
- Granted July 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 1997.
- 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.