Amusement devices: games – Chance devices – Electric or magnetic
Patent
1975-08-18
1976-12-07
Pinkham, Richard C.
Amusement devices: games
Chance devices
Electric or magnetic
273130B, 273155, A63F 300, A63F 908
Patent
active
039958620
ABSTRACT:
A three-dimensional mathematical game comprises a stacked array of rotatable transparent or translucent plates, each plate being rotatable about a common vertical axis, the plates carrying indicia thereon such that when the plates are viewed through one of the top or bottom plates, there will appear to be a plurality of vertical rows of indicia. The indicia are arranged to represent a field of numbers in some numbers system to the base 2 or higher, and the game is played by rotating the plates to go from one number configuration to another.
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patent: 3655194 (1972-04-01), Pierson
Pinkham Richard C.
Strappello Harry G.
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