Invisible ink quiz game

Details Invisible ink quiz game Invisible ink quiz game

1984-01-23

1985-04-30

Grieb, William H.

Education and demonstration

Question or problem eliciting response

Correctness of response indicated to examine by...

273139, 273240, 273DIG26, G09B 306, A63F 918

Patent

active

045141770

ABSTRACT:
A game device including first and second areas with the first area having a number of visible questions, each having a visible identifying indicia associated therewith and at least two visible answers with invisibly marked designations indicating correctness of the answer of the question responded to and a second defined area having random chance selection means to indicate the question to be responded to by a player.

REFERENCES:
patent: 1866545 (1932-07-01), Cohen
patent: 1884197 (1932-10-01), Peterson
patent: 2618866 (1952-11-01), Adams
patent: 3224112 (1965-12-01), Hanson
patent: 3451143 (1969-06-01), Thomas et al.
patent: 3516177 (1970-06-01), Skinner
patent: 3826499 (1974-07-01), Lenkoff
patent: 3918174 (1975-11-01), Miller et al.
patent: 4084332 (1978-04-01), Waloszyk et al.

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