Title:
Chess machine
United States Patent 3395463
US Patent References:
Music-teaching device
- - 1607226

Automatic light indicator for pianos
- - 1642810

Mechanical chessboard
- - 2298456

Game device
- - 2490092

Instruction accessory for chess games
- - 2647749


Inventors:
Worden, Donald G.
Worden, Fred C.
Diedrichs, Robert O.
Trowbridge, Robert E.
Publication Date:
08/06/1968
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Assignee:
Donald, Worden G.
Fred, Worden C.
Primary Class:
434/128
Other Classes:
273/260, 273/237
International Classes:
G09B19/22; G09B19/00
US Patent References:
2944734Test scoring machine
3191315Teaching machine
3319356Teaching or programmed learning machines and automatic teaching computers
Foreign References:
FR1066495A