Expired Canadian patentCanada
Tool for working a medium
CA 1285807 C · Owner: Mitchtip Overseas Pty Ltd · Inventors: Mitchell, Ian Anthony
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A soil-working tine has a recess extending along its wearing edge. The recess captures some soil as the tine passes through the soil. The soil captured in the recess acts as a wearing edge, reducing wear on the material of the tine.
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 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 30, 1987
GrantedJuly 9, 1991
Term endedJuly 9, 2008
Patent numberCA 1285807 C
Classification (IPC)A01B15/00
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.