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Expired Canadian patentCanada

Modular sickle bar sections

CA 1286508 C · Owner: Majkrzak, David S. · Inventors: Majkrzak, David S.

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 modular knifeback for a sickle knife assembly that is made into lengths that are standardized for permitting ease of shipment storage, and handling, and which lengths can be spliced into a desired extended length knife assemble for use in harvesting machinery, or the like, without sacrificing rigidity and strength where the modular sections are joined together. The modular sections are made sufficiently long so that the bolts or rivet used where the modular sections join are capable of withstanding the loads that are incurred on the knife assembly during use. The modular sections of the sickle are easily kept and stored, and are assembled using standard components without specialized …

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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 July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 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.
FiledMay 12, 1988
GrantedJuly 23, 1991
Term endedJuly 23, 2008
Patent numberCA 1286508 C
Classification (IPC)A01D34/14

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMay 12, 1988Patent grantedJuly 23, 1991Term endedJuly 23, 2008

Sources & verification

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