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Expired Canadian patentCanada

Planing catamaran vessel

CA 1313085 C · Owner: Lang, Thomas G. · Inventors: Lang, Thomas G.

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

A catamaran vessel comprises a pair of spaced parallel, elongated pontoons with a strut extending upwardly from each of the pontoons and a superstructure supported on the struts for riding above the waterline. Each pontoon has a sharp chine at its inner and outer edges and is of varying crosssectional width along at least part of its height with the, widest point in the cross-section being situated below the upper surface of the pontoon. The lower surface of each pontoon comprises a planing surface on which the vessel planes at speed.

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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 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 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.
FiledMarch 16, 1988
GrantedJanuary 26, 1993
Term endedJanuary 26, 2010
Patent numberCA 1313085 C
Classification (IPC)B63B1/00

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMarch 16, 1988Patent grantedJan 26, 1993Term endedJan 26, 2010

Sources & verification

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