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Expired Canadian patentCanada

Closure member for pressure vessel

CA 1215002 A · Owner: Reneau, Inc. · Inventors: Reneau, Raymond P.

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 closure member for a pressure vessel having a ring assembly that has a radially expansible outside diameter and an inside diameter defining a central area with the, central area of the diameter greater than one-half the outside diameter, and with the ring assembly selectively engaging the pressure vessel between a locked position and an unlocked position.

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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 December 9, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 2003.
  • 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 11, 1984
GrantedDecember 9, 1986
Term endedDecember 9, 2003
Patent numberCA 1215002 A
Classification (IPC)B65D45/30 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMay 11, 1984Patent grantedDec 9, 1986Term endedDec 9, 2003

Sources & verification

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