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Expired Canadian patentCanada

Saw blade and cut tree collecting and bunching means useful in the continuous harvesting of trees

CA 1111331 A · Owner: Prince Albert Pulpwood Limited · Inventors: Hyde, Bruce; Mellgren, Per G.; Abernethy, Dennis

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

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Abstract From the Canadian patent

This invention is directed to a method and apparatus for continuously harvesting trees to be used ultimately for lumber, pulp wood, and the like. The method comprises moving a tree cutting means through trees standing along the edge of a stand of trees in a continuous manner at a rate whereby the trees along the path taken by the tree cutting means are cut continuously and collected in a substantially parallel pattern on a trough-like means. The apparatus comprises a tree cutting means means such as a, power wagon for moving the cutting means through trees standing along the edge of the stand of trees, framework means for collecting and guiding the cut trees and depositing them in a …

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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 October 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 4, 1979
GrantedOctober 27, 1981
Term endedOctober 27, 1998
Patent numberCA 1111331 A
Classification (IPC)A01G23/08 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedApril 4, 1979Patent grantedOct 27, 1981Term endedOct 27, 1998

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