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Expired Canadian patentCanada

Swivel-head welding torch for gas shielded nonconsumable-electrode arc welding

CA 1267451 C · Owner: Vsesojuzny Nauchno-Issledovatelsky, Proektno- Konstruktorsky I Tekhnologichesky Institut Elektrosvarochnogo Oborudovania (Vniieso) · Inventors: Ivannikov, Alfred V.

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

Abstract of the Disclosure A welding torch comprises a head and two current- -supply conduits which are held with one of their ends to the torch body. The current-supply conduits are connected to the head by means of connectors held at the other ends of the conduits so as to face each other. The connectors are fitted into holes provided in the head and so shaped as to suit the shape of the external surface of the connectors. Through ducts are provided in the connectors to establish communication between the interior spaces of the head and of the current-supply conduits.

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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 April 3, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 3, 1986
GrantedApril 3, 1990
Term endedApril 3, 2007
Patent numberCA 1267451 C
Classification (IPC)B23K9/16

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedNov 3, 1986Patent grantedApril 3, 1990Term endedApril 3, 2007

Sources & verification

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