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Expired Canadian patentCanada

Process for installing liner in pressure vessel

CA 1296984 C · Owner: Alliant Techsystems Inc. · Inventors: Marks, John David

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

Abstract of the Disclosure A process is disclosed for installing an elastomeric liner in a pressure vessel such as a rocket motor casing. The process comprises winding a tacky ribbon comprising cured or curable elastomer around an expandable mandrel inserting the, mandrel in the vessel shell expanding the mandrel and optionally, curing the wound ribbon.

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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 March 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 13, 1987
GrantedMarch 10, 1992
Term endedMarch 10, 2009
Patent numberCA 1296984 C
Classification (IPC)B29C63/28 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 13, 1987Patent grantedMarch 10, 1992Term endedMarch 10, 2009

Sources & verification

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