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Expired Canadian patentCanada

Picture display tube with detachable getter

CA 1098577 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Van Ijzeren, Anton J.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Disclosed is a picture display tube comprising an envelope having a display window, a cone and a neck. An electrode system to generate at least one electron beam is mounted in the neck and an electrical resistive layer extends over an internal wall portion of the envelope to a point near the electrode system. The tube comprises a getter which is detachably secured to a connecting member projecting internally from the wall of the tube at a location remote from the electrode system by means of a resilient connection strip, The portion of the connection member projecting from the tube wall has a gradually widening end having a largest transverse dimension D and a smallest transverse dimension …

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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 March 31, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 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 30, 1978
GrantedMarch 31, 1981
Term endedMarch 31, 1998
Patent numberCA 1098577 A
Classification (IPC)H01J29/02 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 30, 1978Patent grantedMarch 31, 1981Term endedMarch 31, 1998

Sources & verification

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