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Expired Canadian patentCanada

Bulk crop transportation

CA 1324779 C · Owner: Shiers, William F. · Inventors: Cross, John V.; Shiers, William F.

CIPO record

Overview

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

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Abstract From the Canadian patent

Two systems of transporting grain or other bulk crop employ a grain handling trailer incorporating a pair of weighing hoppers with a grain loading system for the hoppers and a grain discharge system. In one system the mobile grain handling truck visits storage containers in the production area and acts to weigh and grade the crop on site before discharging it into haulage trucks for delivery to a rail hub. At the rail hub a grade unloading apparatus is provided comprising a two-storey enclosed building with the road trucks positioned vertically above and parallel to a section of rail on which rail cars can be positioned for receiving by gravity the discharged crop. In the second system the …

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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 November 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 13, 1984
GrantedNovember 30, 1993
Term endedNovember 30, 2010
Patent numberCA 1324779 C
Classification (IPC)B65G67/24 +2 more

Timeline

Timeline From CIPO dates

198519881991199419972000200320062009Application filedDec 13, 1984Patent grantedNov 30, 1993Term endedNov 30, 2010

Sources & verification

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