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Expired Canadian patentCanada

Oil control system

CA 1065622 A · Owner: British Petroleum Company Limited (The) · Inventors: Webb, Michael G.; Finigan, Arthur

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

Seapack. Pack which can be attached to the deck of a support vessel comprises a deflated anti-pollution boom comprising a continuous gas-inflatable gas chamber in side by side relationship to a continuous water inflatable water chamber a driven roller, which can pull the barrier aboard the vessel and cause its deflation, means to attach a first end of the barrier to the vessel means to inflate the gas chamber and means to inflate the water chamber.

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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 November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedNovember 6, 1979
Term endedNovember 6, 1996
Patent numberCA 1065622 A
Classification (IPC)E02B15/04

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedNov 6, 1979Term endedNov 6, 1996

Sources & verification

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