Patents by Inventor Doyle S. Butler

Doyle S. Butler 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).

  • Florescent lighting fixture
    Patent number: D360271
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: July 11, 1995
    Assignee: Cooper Industries, Inc.
    Inventor: Doyle S. Butler