RANDOM SELECTOR SYSTEM FOR ADVERTISING,SALES PROMOTION,AND SELECTION OF AWARD RECIPIENTS
United States Patent 3466045
Inventors:
Walton, Fredric B.
Publication Date:
09/09/1969
Assignee:
Fredric, Walton B.
Other Classes:
273/144R, 200/61.110
International Classes:
G07C15/00; A63B71/06