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Expired Canadian patentCanada

Bale retainer for roll baling machine

CA 1202208 A · Owner: Sperry Corporation · Inventors: Clevenger, James T. Jr.; Diederich, Anthony F. Jr.; Parrish, Charles A.

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 roll baling machine includes an apron supported on a base frame and movable in suitable manner to form roll bales of crop material. A bale retainer is mounted on the base frame to momentarily hold a roll bale upward in the base frame during its discharge therefrom. The bale retainer is movable from an inoperative position during bale formation to an operative position during discharge of a roll bale from the base frame.

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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 March 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 12, 1983
GrantedMarch 25, 1986
Term endedMarch 25, 2003
Patent numberCA 1202208 A
Classification (IPC)A01F15/00 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJan 12, 1983Patent grantedMarch 25, 1986Term endedMarch 25, 2003

Sources & verification

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