Non-slip measuring tool and method of making
CA 2534775 C · Owner: Rulersmith, Inc. · Inventors: Schafer, Margaret D.; Ray, David A.; Schafer, Randal D. (Deceased)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tool (10) for measuring, marking, or cutting material the tool formed of a , rigid sheet of transparent material (11) having a plurality of lines formed thereon, and a transparent, non-removable slip-resistant coating (17) applied , to a working surface of the rigid sheet to resist slipping of the tool when applied to the material.
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 July 30, 2004 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2026.
- 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.