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Expired Canadian patentCanada

Polarized electromagnet and polarized electromagnetic relay

CA 1208679 A · Owner: Sds-Relais Ag · Inventors: Nagamoto, Mitsuki; Hashiya, Ikuo

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

Polarized Electromagnet and, Polarized Electromagnetic Relay ABSTRACT OF THE DISCLOSURE:, A polarized electromagnet comprises a generally E-shaped yoke including a pair of outer legs and an intermediate leg therebetween, the three legs being interconnected by a base portion, and a coil wound about the intermediate leg. A generally U-shaped armature comprises a permanent magnet and two pole plates attached to both ends of the permanent magnet. The armature is so positioned that each pole plate extends between the intermediate leg and a respective one of the outer legs of the yoke. The armature may be fitted into a generally U-shaped resin member integrally molded with portions extending …

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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 July 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 29, 1984
GrantedJuly 29, 1986
Term endedJuly 29, 2003
Patent numberCA 1208679 A
Classification (IPC)H01H51/22

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedJune 29, 1984Patent grantedJuly 29, 1986Term endedJuly 29, 2003

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