DEVICE FOR PLAYING A WORD GAME
United States Patent 3463487
Inventors:
Tepper, Sidney
Publication Date:
08/26/1969
Other Classes:
273/272, 273/143R, 434/167
International Classes:
A63F9/00; A63F9/18
US Patent References:
| 2875530 | Optical training device to increase reading speed | | | |
| 2998252 | Electrically driven random indicium selector | | | |