Patents by Inventor William J. Martin, Jr.

William J. Martin, Jr. 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).

  • Darts scoring machine
    Patent number: D262951
    Type: Grant
    Filed: August 23, 1979
    Date of Patent: February 9, 1982
    Assignee: Nodor Scores Limited
    Inventor: William J. Martin, Jr.
  • Darts scoring machine
    Patent number: D265064
    Type: Grant
    Filed: January 23, 1980
    Date of Patent: June 22, 1982
    Assignee: Nodor Scores Limited
    Inventor: William J. Martin, Jr.