Groove cutting apparatus
CA 1061624 A · Owner: Errut Products Limited · Inventors: Jackson, Philip; Fairweather, Ernest S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Groove cutting apparatus having a rotatable cutting drum comprising a plurality of spaced drum segments coaxially mounted on a central shaft. A plurality of secondary shafts are spaced circumferentially around the central shaft and supported by the drum segments. Apertured cutting members are mounted on the secondary shafts and spaced by the drum segments.
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 September 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 4, 1996.
- 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.