The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1987
Filed:
Jul. 11, 1986
Applicant:
Inventors:
Lawrence E Demar, Chicago, IL (US);
Steven S Ritchie, Evanston, IL (US);
Assignee:
Williams Electronics, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A63F / ; A63F / ;
U.S. Cl.
CPC ...
2731 / ; 2731 / ; 273 / ;
Abstract
A microprocessor computer system includes random access and read only memories and a set of operator switches permitting the storage of game play information. During operation of the amusement device, game play is monitored and the score required to receive a free play is periodically adjusted to maintain a selected free play percentage. The percentage is determined by either the factory setting or the operator through the operator switches. The data used to compute the free play percentage is constantly checked by the system to insure that it is valid.