Patents by Inventor Michael J. Keilholz

Michael J. Keilholz 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).

  • Patent number: 7025612
    Abstract: A lampsocket having a porcelain body that has a base, a peripheral wall, and at least two of a rigid, longitudinal spacer projecting axially outwardly from the base. The longitudinal upper surfaces of the spacers engage opposite areas of the bottom of the base of the lamp. The lampsocket is intended for use with and to operate a class of lamps having a threaded base having an insulated extension from the central portion of the bottom of the lamp base, and a central button mounted on the insulated extension. The lampsocket can also accept, but can not make electrical contact with, other lamps that have a conventional base contact without the insulated extension.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: April 11, 2006
    Assignee: LSI Industries, Inc.
    Inventors: Michael J. Keilholz, Mark C. Reed, Robert E. Kaeser
  • Patent number: D542735
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: May 15, 2007
    Assignee: LSI Industries, Inc.
    Inventors: Michael J. Keilholz, Mark C. Reed, Robert E. Kaeser