Patents Represented by Attorney William A. Marshall

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  • Digital clock
    Patent number: D250252
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: November 14, 1978
    Assignee: Spartus Corporation
    Inventor: Donald J. Booty
  • Digital clock
    Patent number: D250253
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: November 14, 1978
    Assignee: Spartus Corporation
    Inventor: Donald J. Booty
  • Digital clock
    Patent number: D250254
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: November 14, 1978
    Assignee: Spartus Corporation
    Inventor: Donald J. Booty
  • Multiple drum bracket
    Patent number: D254140
    Type: Grant
    Filed: July 14, 1977
    Date of Patent: February 5, 1980
    Inventor: Marvin V. Kuipers