Combination system and question and answer matching game

Details Combination system and question and answer matching game Combination system and question and answer matching game

1984-01-13

1985-07-02

Grieb, William H.

Education and demonstration

Question or problem eliciting response

Correctness of response indicated to examine by...

70286, 273157R, 434200, 434201, 434345, G09B 110

Patent

active

045265500

ABSTRACT:
A combination system such as may, for example, be embodied in a matching game or instructional device or in a set of locks and keys consists of a number of receivers and an associated number of plugs with both the receivers and the plugs having cooperable coding features coded according to unique rules, derivable from N-dimensional geometry, assuring a desired form of cooperation between a plug inserted in a receiver only when the code of such plug matches the code of the receiver.

REFERENCES:
patent: 3469325 (1969-09-01), Greenberg
patent: 3805416 (1974-04-01), Plefkey

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