Patents by Inventor W. W. Whitney

W. W. Whitney 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).

  • Telephone annunciator with low battery indication
    Patent number: 4727572
    Abstract: A system for producing alternate summoning signals for telephones is described. The system is interposed between a conventional telephone and the telephone line. When a ringing signal occurs, the conventional ringer is silenced and replaced by a musical selection, a chime, a light display or other signal. The system is battery powered. When the battery voltage drops, the summoning signal changes to a continuous tone indicating the need for battery replacement.
    Type: Grant
    Filed: October 6, 1986
    Date of Patent: February 23, 1988
    Inventor: W. W. Whitney