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Expired Canadian patentCanada

Method and means for controlling the manufacture of windings for inductive apparatus

CA 1183336 A · Owner: Asea Aktiebolag · Inventors: Moritz, Bertil

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

A method of and means for, controlling the manufacture of a winding for an inductive apparatus for example a trans-, former winding or a reactor winding which winding is of the, kind comprising a plurality of turns of a sheet composed of an electrically conductive metallic foil and an electrically insulating film on each side of the metallic foil. During the winding of the sheet, the metallic foil together with the insulating films is passed through at least one electrode device which comprises at least two rolls arranged one on each side of the sheet and having a different voltage compared with the metallic foil. At the electrode device the insulating, films are pressed with a certain …

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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 March 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 18, 1982
GrantedMarch 5, 1985
Term endedMarch 5, 2002
Patent numberCA 1183336 A
Classification (IPC)H01F41/06 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedFeb 18, 1982Patent grantedMarch 5, 1985Term endedMarch 5, 2002

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