Patents by Inventor Jeffrey Landtroop

Jeffrey Landtroop 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: 6265651
    Abstract: The present invention is a gauge for selecting musical instrument strings. It includes a base member and at least one movable member that is engaged to the base member, and which provides information related to specific musical strings. In preferred embodiments, musical string information is written onto the base member and the movable members contain viewing windows that display the information. A separate movable member is provided for each string of a string set. In the preferred embodiment, the base member and movable members are shaped as crcular disks and they are rotatably joined about a common centrally disposed axle.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: July 24, 2001
    Assignee: American Winding Company
    Inventor: Jeffrey Landtroop