Hooking device for a measuring tape
CA 2177010 C · Owner: Silvester, William H. · Inventors: Gilliam, Edgar T.; Silvester, William H.; Blackman, William C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hooking device for a tape measure includes a ring member pivotally attached to a hook member. The hook member includes a planar surface which is perpendicular to the ring member in an extended position. Extending from the planar surface of the hook member are two supporting side surfaces which enhance the rigidity of the hook member to prevent bending. The hook member can also include a plurality of pointed barbs and a contacting surface which prevent slippage of the hooking device during 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
- Filed May 21, 1996 and granted March 14, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2018.
- 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.