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Expired Canadian patentCanada

Power-dividing and modulating arrangement

CA 1091311 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Bikker, 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

A HF signal source which is coupled to a common terminal to which impedances which are provided with control terminals for supplying a HF carrier signal to these impedances are connected via individual 1/4 .lambda.-transformers. Furthermore modulation signals are fed to the control terminals for supplying amplitudemodulated carrier signals to the impedances. To obtain a reflection-free termination in situ of the common terminal the HF signal source is provided with modulation means to which the sum signal of said modulation signals are applied. -16-

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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 December 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 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.
FiledMarch 28, 1977
GrantedDecember 9, 1980
Term endedDecember 9, 1997
Patent numberCA 1091311 A
Classification (IPC)H03C1/52 +1 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedMarch 28, 1977Patent grantedDec 9, 1980Term endedDec 9, 1997

Sources & verification

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