US PATENT SUBCLASS 273 / 431
.~.~ Categorized or grouped questions
Current as of:
June, 1999
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273 /
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AMUSEMENT DEVICES: GAMES
429
DF
PROBLEM ELICITING RESPONSE
{1}
430
DF
.~ Questions and answers {2}
431
.~.~ Categorized or grouped questions
DEFINITION
Classification: 273/431
Categorized or grouped questions:
(under subclass 430) Apparatus wherein the questions are subdivided by related subject matter.