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Expired Canadian patentCanada

Submersible marine dock system and method

CA 2033764 C · Owner: Meldrum, Charles R. · Inventors: Meldrum, Charles R.

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 submersible dock system with mooring pilings which folds down for storage underwater. The dock system includes a deck or mainspan normally above water a, submerged horizontal frame and, if necessary leveling means, and a plurality , of vertical support structures extending between the submerged frame and dock. The submerged, frame, vertical structures and mainspan of the deck are all preferably constructed of, rectangular tubing members which are pivotally joined in key places to enable the deck to be, pivoted from an upright position to a substantially supine position underwater. The dock, system also includes a plurality of telescoping members to hold the deck in an upright, …

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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

  • Filed January 8, 1991 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 8, 1991
GrantedDecember 25, 2001
Term endedJanuary 8, 2011
Patent numberCA 2033764 C
Classification (IPC)B63C1/00 +1 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedJan 8, 1991Patent grantedDec 25, 2001Term endedJan 8, 2011

Sources & verification

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