Patents Assigned to Mark Lockwood
  • 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
  • Visor
    Patent number: D315052
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: March 5, 1991
    Assignee: Mark Lockwood
    Inventors: Mark E. Lockwood, Gini L. Hetherington