Patents by Inventor Charles Walter Aufranc, deceased

Charles Walter Aufranc, deceased 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).

  • Electrotherapeutic apparatus
    Patent number: 4095601
    Abstract: An electrotherapeutic apparatus for external application comprising circuitry for generating direct-current voltage pulses having an amplitude between 4 and 22 volts and a frequency amounting to at least approximately 8.5 Hz.
    Type: Grant
    Filed: June 3, 1976
    Date of Patent: June 20, 1978
    Inventors: Charles Walter Aufranc, deceased, by Ida Aufranc, heir