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Expired Canadian patentCanada

Arc spot welding apparatus

CA 1323400 C · Owner: Okada, Toshihiko · Inventors: Morimoto, Hiroyuki; Nagasaka, Moritoshi; Sakai, Masao

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

There is disclosed an arc spot welding apparatus comprising a welding power supplying unit a wire feeder, connected to the welding power supplying unit by a control cable and an arc spot welding torch connected to the wire feeder by a torch cable which is operable by operating an operation switch arranged on a holder thereof to be held by an operator being characterized in that the welding torch comprises ? a nozzle assembly providing a nozzle and a power supply element, a torch holder assembly and a torch body assembly connecting said nozzle assembly and said torch holder assembly which is formed to have a length so that the operator can operate said welding torch from a standing 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 October 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 28, 1989
GrantedOctober 19, 1993
Term endedOctober 19, 2010
Patent numberCA 1323400 C
Classification (IPC)B23K9/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJuly 28, 1989Patent grantedOct 19, 1993Term endedOct 19, 2010

Sources & verification

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