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Expired Canadian patentCanada

Truck semi-trailer and full trailer combination in which the semi-trailer and the full trailer can be locked together for backing

CA 1300657 C · Owner: Lutz, David W. · Inventors: Lutz, David W.; Lutz, David E.

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 cargo-carrying vehicle including a forward cargo-carrying body; a rearward cargo-carrying body; and an apparatus for locking the forward cargo-carrying body and the rearward cargo-carrying body together so that the forward and rearward cargo-carrying; bodies can be backed as one unit. In some embodiments the, apparatus can provide at least three spacing between the forward cargo-carrying body and the rearward cargo-carrying body. 80/rac

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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 May 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 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.
FiledMarch 1, 1988
GrantedMay 12, 1992
Term endedMay 12, 2009
Patent numberCA 1300657 C
Classification (IPC)B62D53/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 1, 1988Patent grantedMay 12, 1992Term endedMay 12, 2009

Sources & verification

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