Education and demonstration – Question or problem eliciting response – Correctness of response indicated to examine by...
Patent
1983-12-27
1985-04-02
Shapiro, Paul E.
Education and demonstration
Question or problem eliciting response
Correctness of response indicated to examine by...
273139, G09B 308
Patent
active
045085137
ABSTRACT:
The invention relates to a game card device 1 comprising a manually held card 2 which has first, second and third indicia 3, 4 and 5 all of which have spaces which are covered by a camouflaging layer of rubber/graphite mixture which can be removed readily by rubbing or scratching. The first indicia 3 indicates a first category or field of activity, the second 4 indicia identifies a number of different integers associated with the first indicia 3 and the third indicia 5 provides a plurality of separate options associated with a combination of the first and second indicia 3 and 4 whereby to match them using skill.
REFERENCES:
patent: 3918174 (1975-11-01), Miller et al.
patent: 4095824 (1978-06-01), Bachman
patent: 4241943 (1980-12-01), Malinovitz
patent: 4429877 (1984-02-01), Coppock
patent: 4466614 (1984-08-01), Bachman et al.
Don Marketing Ltd.
Shapiro Paul E.
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