Patents by Inventor Leroy G. Leighton

Leroy G. Leighton 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).

  • Stay-on lamp
    Patent number: 4093894
    Abstract: A lamp is described having an internal switch for keeping at least one filament incandescent for a predetermined time after an external switch indicates the user wishes to turn the lamp off.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: June 6, 1978
    Assignee: General Electric Company
    Inventor: Leroy G. Leighton