Knitting needle
CA 1081984 A · Owner: Torrington Company (The) · Inventors: Lopes, Antone, Jr.; Shepard, Richard W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This knitting needle is a latch needle of the male latch-female hook type. The shape of the groove in the hook and the shape of the latch is such that during the initial use of the needle, only the end of the inner surface of the latch contacts the bottom surface of the groove. The amount of the surface of the inner portion of the latch which contacts the groove bottom surface gradually increases as the groove bottom surface and the inner surface of the latch are worn by use.
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 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 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.