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Expired Canadian patentCanada

Lanced strip, core, method of forming such core, and apparatus

CA 1254937 A · Owner: General Electric Company · Inventors: Fritzsche, Harold L.

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Abstract From the Canadian patent

Abstract of the Disclosure A lanced strip of generally thin ferromagnetic material has a continuous yoke section extending generally lengthwise thereof, and a plurality of teeth on the lanced strip are aligned generally about a plurality of pitch axii therefor and extend generally laterally from the yoke section, respectively. A plurality of slots extend through the lanced strip between adjacent ones of the teeth, respectively. The yoke section includes a plurality of sets of generally arcuate inner and outer edges, the arcuate inner edges extend between the adjacent ones of the teeth thereby to define closed ends of the slots and adjacent ones of the arcuate outer edges intersect with each …

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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 May 30, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 30, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 3, 1985
GrantedMay 30, 1989
Term endedMay 30, 2006
Patent numberCA 1254937 A
Classification (IPC)H02K15/00 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedOct 3, 1985Patent grantedMay 30, 1989Term endedMay 30, 2006

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