Patents Assigned to QRS Corporation
  • Patent number: D266844
    Type: Grant
    Filed: November 7, 1980
    Date of Patent: November 9, 1982
    Assignee: QRS Corporation
    Inventor: Ernest F. J. Prinzhorn
  • Patent number: D286098
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: October 7, 1986
    Assignee: QRS Corporation
    Inventor: Ernest F. J. Prinzhorn
  • Patent number: D289215
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: April 7, 1987
    Assignee: QRS Corporation
    Inventor: Ernest F. J. Prinzhorn
  • Patent number: D293150
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: December 8, 1987
    Assignee: QRS Corporation
    Inventor: Ernest F. J. Prinzhorn
  • Patent number: D293151
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: December 8, 1987
    Assignee: QRS Corporation
    Inventor: Ernest F. J. Prinzhorn
  • Patent number: D293152
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: December 8, 1987
    Assignee: QRS Corporation
    Inventor: Ernest F. J. Prinzhorn
  • Patent number: D293269
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: December 15, 1987
    Assignee: QRS Corporation
    Inventor: Ernest F. J. Prinzhorn
  • Patent number: D293844
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: January 19, 1988
    Assignee: QRS Corporation
    Inventor: Ernest F. J. Prinzhorn