United States Patent 3069163
Inventors:
Schaefer, George E.
Publication Date:
12/18/1962
Other Classes:
473/22, 273/125R, 473/29
International Classes:
A63D15/00
US Patent References:
| 1992507 | Return-ball equipment for billiard tables and the like | | | |
| 2165875 | Return-ball equipment for billiard tables and the like | | | |