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Expired Canadian patentCanada

High voltage electron tube base with separate dielectric fill-hole

CA 1085476 A · Owner: Rca Corporation · Inventors: Marks, Bruce G.; Wardell, Myron H. Jr.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Invention, The base comprises a tubular housing adapted to fit over the exhaust tubulation of an electron tube stem and a, wafer flange extending outwardly from the open end thereof. The flange is apertured to receive an array of conductors of the stem. A recess is provided in the wafer flange facing the stem and a passageway communicating therewith is provided through the base separate from the housing cavity for the purpose of injecting a dielectric material into the recess around some of the stem conductors. The passageway may e.g. be through the flange or in the housing wall. A shoulder is provided on the recessed face of the wafer flange to provide relief for random …

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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 September 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 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.
FiledMay 16, 1978
GrantedSeptember 9, 1980
Term endedSeptember 9, 1997
Patent numberCA 1085476 A
Classification (IPC)H01R33/06 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMay 16, 1978Patent grantedSep 9, 1980Term endedSep 9, 1997

Sources & verification

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