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Expired Canadian patentCanada

Mobile rail welding machine

CA 1090171 A · Owner: Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. · Inventors: Theurer, Josef

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 mobile rail welding machine comprises frame two undercarriages supporting the frame a hydraulically driven flash butt welding unit for welding abutting rail section ends of a track rail mounted on the frame intermediate the undercarriages, a hydraulically driven weld burr removal unit mounted on the frame intermediate the undercarriages, which units may be integrated with each other, and a hydraulic jack for the frame operable to relieve the track rails of the machine weight.

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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 November 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 1997.
  • 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, 1978
GrantedNovember 25, 1980
Term endedNovember 25, 1997
Patent numberCA 1090171 A
Classification (IPC)B23K28/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedNov 3, 1978Patent grantedNov 25, 1980Term endedNov 25, 1997

Sources & verification

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