Patents by Inventor Alan Frank Higginbotham

Alan Frank Higginbotham 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).

  • Bias/erase oscillator
    Patent number: 4006433
    Abstract: A low distortion sinusoidal oscillator made up of a two transistor negative resistance element combined with an LC tank for generating bias and erase signals for battery powered magnetic media recording apparatus.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: February 1, 1977
    Assignee: International Business Machines Corporation
    Inventors: Alan Frank Higginbotham, Kenneth Layton Jeffries