Patents by Inventor Duane D. Beyer

Duane D. Beyer 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).

  • Phonograph record illumination device and system
    Patent number: 4779170
    Abstract: An illumination device (10) for a phonograph record (18) has a housing (14) and bolts (22) for attaching the housing (14) to a phonograph tone arm (12). A battery (26) in the housing (14) and a contact switch (32) on the housing are connected to activate a timing circuit (28) for supplying current from the battery (26) to a light emitting diode (30). The light emitting diode (30) is positioned to illuminate an area around point (36) that stylus (20) contacts the record for a predetermined of time after the contact switch (32) is closed.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: October 18, 1988
    Assignee: Mark Lockwood
    Inventors: Mark Lockwood, Duane D. Beyer, Paul Kardel, Charles A. Lockwood