Patents by Inventor Lev I. Shapiro

Lev I. Shapiro has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electric oscillation generator
    Patent number: 4471316
    Abstract: Disclosed is an electric oscillation generator comprising an exciter and an output amplifier stage utilizing a vacuum tube connected in a common-grid circuit. A section of the input circuit of the vacuum tube is connected to the output of the exciter. The exciter is made as a power supply through a compensating-voltage producing device connected in series with said section of the input circuit and having an output voltage opposite in phase to the voltage across said section of the input circuit of the vacuum tube.
    Type: Grant
    Filed: February 10, 1981
    Date of Patent: September 11, 1984
    Inventors: Matvei I. Pass, Nina S. Ogarkova, Jury K. Lesish, Lev I. Shapiro, Jury M. Lebedev, Oleg V. Filatov