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Expired Canadian patentCanada

Free fall submersible life saving device particularly for offshore structures working in extremely heavy weather conditions

CA 1262218 C · Owner: Politechnika Gdanska · Inventors: Rowinski, Lech; Doerffer, Jerzy W.; Niepieklo, Andrzej

CIPO record

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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 free fall submersible life saving device particularly, intended for offshore structures working in extremely heavy, weather conditions. It is fitted with a spherical capsule which according to the invention is distinguished by the pressure shell having in the upper part at least one manhole closed with a cover and in the lower part glands for electric cables hydraulic piping and mechanical drive which are placed in the outer casing which contains a lifting lug. Frame fastened to the lower part of the casing, where a windlass with an automatic control of the tension in the anchor rope anchor, and ballast are placed, connected to lower part of the casing in a detachable manner by means of …

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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 October 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 10, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 4, 1985
GrantedOctober 10, 1989
Term endedOctober 10, 2006
Patent numberCA 1262218 C
Classification (IPC)B63B23/28 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedSep 4, 1985Patent grantedOct 10, 1989Term endedOct 10, 2006

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