Patents Assigned to BCG, Ltd.
  • Calculator tray apparatus
    Patent number: 4320838
    Abstract: Tray apparatus for use in business establishments includes a tray and a calculator for enabling patrons to verify and make arithmetic calculations.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: March 23, 1982
    Assignee: BCG, Ltd.
    Inventor: Sanford L. Braver