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Expired Canadian patentCanada

Agricultural bale sheathing apparatus and method

CA 1302989 C · Owner: Stirling, William · Inventors: Stirling, William

CIPO record

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

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Abstract From the Canadian patent

A bale sheathing device for loading bales of an agricultural product, e.g. silage, into an elongated flexible bag, comprises a framework movable along the ground and supporting an open-ended drum that has an outer surface for supporting the bag in a compressed condition. The device has pads connected to the framework that can be lowered to a location underlying the wheels of a vehicle that is used to load a bale through the drum and into a space in the bag beyond the drum. The result is to immobilize the device during the loading operation by virtue of the weight of the vehicle on the pads. The same vehicle can be used between bale loading operations to pull the sheathing device forwards to …

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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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
  • 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 19, 1989
GrantedJune 9, 1992
Term endedJune 9, 2009
Patent numberCA 1302989 C
Classification (IPC)B65B9/15 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJan 19, 1989Patent grantedJune 9, 1992Term endedJune 9, 2009

Sources & verification

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