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Expired Canadian patentCanada

Swath treating attachment for a swather

CA 1287221 C · Owner: Bernier, Paul · Inventors: Bernier, Paul

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

An attachment for a swather comprises a panel which is hinged at a front edge on the swather so as to hang downwardly and rearwardly therefrom so that rear edge engages and compresses the swath as it emerges from the swather. The panel is spring biased downwardly to compress the swath against the ground to reduce the danger of wind damage in fluffy crops such as flax. Side edges of the panel include spring tines extending outwardly from the rear edge so as to compress the swath particularly at side edges of the swath with a centre section of the panel bowed upwardly to reduce the compression action in that area.

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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

  • Granted August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 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 28, 1988
GrantedAugust 6, 1991
Term endedAugust 6, 2008
Patent numberCA 1287221 C
Classification (IPC)A01D75/00 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedSep 28, 1988Patent grantedAug 6, 1991Term endedAug 6, 2008

Sources & verification

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