Cultivator sweep assembly
CA 2265085 C · Owner: Bergen, Henry John · Inventors: Bergen, Henry John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cultivator sweep secured to a sweep holder that is attached to a cultivator implement for shearing surface soil. The cultivator sweep includes a body member having a front nose portion a rear portion and a pair of laterally outwardly extending wing members. The rear portion includes a slot. The sweep holder includes an insertion member and at least two flanges. The insertion member is received within the slot and the at least two flanges extend outwardly from the insertion member and define grooves to receive the body member. An interference fit is created between the body member of the cultivator sweep and the at least two flanges of the sweep holder to securely retain the cultivator …
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 March 9, 1999 and granted May 27, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 9, 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.