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Expired Canadian patentCanada

Valve, especially a radiator valve

CA 1062688 A · Owner: Braukmann Armaturen Ag · Inventors: Edelmann, Gunther

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 radiator valve has a housing carrying a valve stem with plate and loading spring on the valve stem above the valve plate; a first seal bears against the valve stem between the valve plate and the spring. A presetting member is located in the housing and it carries a second seal bearing against the valve stem at a position removed from the valve plate with respect to the first seal.

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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 September 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 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—
GrantedSeptember 18, 1979
Term endedSeptember 18, 1996
Patent numberCA 1062688 A
Classification (IPC)F16K1/00 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedSep 18, 1979Term endedSep 18, 1996

Sources & verification

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