Patents by Inventor William Manzarek

William Manzarek 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).

  • Corded to cordless telephone converter
    Patent number: 4937852
    Abstract: A converter device for enabling a standard, corded telephone to function as a cordless telephone, said converter comprising radio-linking means interposable between said standard telephone and a telephone transmission line.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: June 26, 1990
    Assignees: Margaret Weiser, Issac Weiser
    Inventor: William Manzarek