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Expired Canadian patentCanada

L-drive

CA 1312504 C · Owner: Us Marine Corporation · Inventors: Jones, David D.

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 propeller drive for a boat which provides independent steering and independent trimming/tilting mounts through a hole in a bottom surface of the boat. Steering of the propeller drive is provided by a steering assembly constructed to rotate about a generally vertical axis for connecting the drive up through the hole in the boat. Trimming of the propeller drive is provided by a trimming assembly which is pivotally connected to swing the propeller drive generally horizontally from the steering assembly.

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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 January 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 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
GrantedJanuary 12, 1993
Term endedJanuary 12, 2010
Patent numberCA 1312504 C
Classification (IPC)F02B75/02

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMay 27, 1988Patent grantedJan 12, 1993Term endedJan 12, 2010

Sources & verification

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