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Expired Canadian patentCanada

Bladesaver assembly

CA 2018309 C · Owner: G H Hensley Industries, Inc. · Inventors: Robinson, Howard W.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A wear assembly for a bucket of an excavation apparatus comprising a wear plate which in use, provides, a forward lower lip of the bottom wall of the bucket. A plurality of adapters are mounted at spaced apart locations on the forward edge of the wear plate. A plurality of hollow, replaceable excavating teeth are mounted on the adapters. A plurality of wear shroud means are each mounted on the forward edge of the wear plate with the wear shroud means each occupying the space between adjacent adapters secured to the adjacent adapters by locking pins engaged in registering apertures in the shroud means and adapters and covering the bottom of. the adjacent adapters to provide a wear bearing …

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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 June 5, 1990 and granted May 8, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 5, 1990
GrantedMay 8, 2001
Term endedJune 5, 2010
Patent numberCA 2018309 C
Classification (IPC)E21C37/26 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJune 5, 1990Patent grantedMay 8, 2001Term endedJune 5, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.