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Expired Canadian patentCanada

Boat with cavity for a boat propulsion device

CA 1318817 C · Owner: Livingston, David T. · Inventors: Livingston, David T.

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 boat with a generally vertical transom includes a water planing hull bottom surface shaped to provide a minimum wetted area when on plane and a raised bottom surface above the bottom surface. The raised bottom surface contains a hole therethrough adjacent the transom for mounting a boat propulsion device having a downward and rearward extending propeller drive. The raised bottom surface forms an upward cavity having an open end notched through the transom within the bottom surface of the boat. In a second embodiment the boat includes a second raised bottom surface adjacent the upward cavity.

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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 8, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 8, 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.
FiledMay 27, 1988
GrantedJune 8, 1993
Term endedJune 8, 2010
Patent numberCA 1318817 C
Classification (IPC)B63H21/14 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMay 27, 1988Patent grantedJune 8, 1993Term endedJune 8, 2010

Sources & verification

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