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Expired Canadian patentCanada

Interlocking electron tube base and adapter

CA 1104629 A · Owner: Rca Corporation · Inventors: Marks, Bruce G.

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

RCA 71,802/71,802A, Interlocking Electron Tube Base and Adapter Abstract of the Disclosure, A wafer type tube base is secured to a stem structure of an electron tube. The base includes a cup which fits over an exhaust tubulation of the stem and a wafer flange which extends radially outward from the open end of the cup and abuts the stem wall. The flange has an array of apertures for receiving an array of stem conductors therethrough. An adapter is provided for converting the wafer-type base to a pin-protector type base. The adapter comprises a hollow cylindrical member having a plurality of longitudinally extending ribs on its outer surface. The adapter telescopes over the exhaust …

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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 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.
FiledSeptember 22, 1978
GrantedJuly 7, 1981
Term endedJuly 7, 1998
Patent numberCA 1104629 A
Classification (IPC)H01J5/48 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedSep 22, 1978Patent grantedJuly 7, 1981Term endedJuly 7, 1998

Sources & verification

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