ACADEMIC QUIZ CONTROLLER
Inventors: Dennis F. Piwonka, Rte. 5, Box 204, Caldwell, Tex. 77836; Gregory S. Schreiber, 817 S. Waverly, Mt. Prospect, 111. 60056
Appl. No.: 483,078
Filed: Feb. 21,1990
Int. C1.5 A63F 9/00
U.S. CI 434/352; 273/433
Field of Search 434/352, 323, 336;
273/430, 433, 237, 455
References Cited
U.S. PATENT DOCUMENTS
2,562,179 7/1951 Dorf .
2,654,163 10/1953 Reynolds .
3,113,236 1/1964 Hemel .
3,491,464 1/1970 Gray .
3,666,873 5/1972 Pincus .
3,763,577 10/1973 Goodson .
3,852,894 12/1974 Ryland .
4,079,365 3/1978 Yamauchi .
4,261,563 4/1981 Goldfarb 273/433
4,285,517 8/1981 Morrison et al 273/433
