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Expired Canadian patentCanada

Linear high power transistor amplifiers

CA 1080312 A · Owner: Rca Corporation · Inventors: Sechi, Franco N.

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 linear amplifier amplifies a radio frequency (RF) signal. The RF signal is amplitude modulated by modulating signals having a wide range of frequencies. The amplifier is of the type having a D.C. input port and a D.C. output port and includes a first transistor having first, second and third, electrodes. First biasing means is connected across the input ports for providing a first biasing voltage across the first and second transistor electrode. Second biasing means is connected across the output port for providing a second biasing voltage across the first and third transistor electrodes. Linearization resistance means is coupled to one of the first transistor electrodes for linearizing …

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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 June 24, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 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.
Filed—
GrantedJune 24, 1980
Term endedJune 24, 1997
Patent numberCA 1080312 A
Classification (IPC)H03F3/16 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 24, 1980Term endedJune 24, 1997

Sources & verification

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