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Expired Canadian patentCanada

Valve protector

CA 1333697 C · Owner: Linde Canada Inc. · Inventors: Philipp, Juergen D.

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 one-piece integrally-formed valve protector for a gas discharge valve of a pressurized gas cylinder is permanently mounted to the cylinder. The valve protector includes side walls which upwardly and outwardly flare from a mounting neck ring having inner threads and a domed top wall extending between and joining the side walls and dimensioned to enclose the valve. The side walls and top wall define front and rear openings to permit access to the valve therethrough.

Read the whole patent

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 27, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 27, 2011.
  • 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 26, 1989
GrantedDecember 27, 1994
Term endedDecember 27, 2011
Patent numberCA 1333697 C
Classification (IPC)F17C13/00

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMay 26, 1989Patent grantedDec 27, 1994Term endedDec 27, 2011

Sources & verification

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