Clamping device
CA 2338474 A1 · Owner: Cartwright, Bernard · Inventors: Cartwright, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a clamping device for use by individuals when cutting sheet material, such as planks or boards. The device comprises an upper clamping surface (1), a lower clamping surface (2) and a projection (3) extending downwardly from the upper clamping surface (1) into an aperture (4) of the lower clamping surface (2). In use the clamping device is slipped onto , an end face of sheet material after an initial cut has been made. The user can then proceed to extend the saw cut using a hand saw jigsaw etc. safe in the , knowledge that the clamping device will prevent excessive vibration of the cut ends of the material and that the projection (3) will maintain the gap (known …
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 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2021.
- 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.