Wear resistant excavating apparatus
CA 2199671 C · Owner: Gh Hensley Industries, Inc. · Inventors: Ruvang, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wear resistant excavating apparatus provides reduced wear, resilient compensation for such wear reduced time required for installation maintenance, and repair, and reduced hazards of operation. In a preferred embodiment, a wear resistant excavating apparatus has a lip which penetrates the earth a, structure which overlaps the lip, a fastener which biases the overlapping structure to contact the lip and a compression member which resiliently maintains the overlapping structure in contact with the lip.
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 11, 1997 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 2019.
- 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.