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Expired Canadian patentCanada

Busbar system of electric high voltage switchgear

CA 1099792 A · Owner: Coq B.V. · Inventors: Irik, Gijsbert W.; Boersma, Rintje; Marien, Pieter

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

In electric switchgear for high voltages a busbar system of, which each busbar consists of a pair of elongate parallel rods, each, having an inner face and an outer face which are fastened by bolts to, supporting insulators. The insulators have a portion disposed between the inner faces of the rods each having a longitudinally extending T-slot for receiving the heads of the bolts whereby the attachment may be made at a selected longitudinal position along the busbar.

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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 April 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 6, 1978
GrantedApril 21, 1981
Term endedApril 21, 1998
Patent numberCA 1099792 A
Classification (IPC)H02G5/06

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 6, 1978Patent grantedApril 21, 1981Term endedApril 21, 1998

Sources & verification

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