Patents by Inventor David J. De Marco

David J. De Marco 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).

  • Interchangable pre amp module for an electronic string instrument
    Patent number: 7256343
    Abstract: An interchangeable modular insert for a electric stringed instrument is mounted in a cavity cut into the rear of the instrument. The rear insertion module provides rapid exchange of electronic components of different manufacturers. Placement of a module into the instrument automatically positions the module and electrically connects the same with the module being retained in the guitar body by a threaded fastener.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: August 14, 2007
    Inventors: Kevin Brubaker, David J. De Marco