United States Patent 3522947
Inventors:
Anderson, Robert I.
Russell, Jack A.
Baldwin, Bradford J.
Publication Date:
08/04/1970
Other Classes:
473/171, 473/161
International Classes:
A63B67/02; A63B69/36; A63B67/02
US Patent References:
| 3366388 | Electrically operated golf game | | | |