Patents Assigned to Boulder Product Development Corportion
  • Ball pitching unit
    Patent number: D360005
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: July 4, 1995
    Assignee: Boulder Product Development Corportion
    Inventors: Calvin A. Nickal, Jeffrey J. Newhouse, Louis R. Dilts, Gregory D. Volan, Anthony M. Grieder