US PATENT SUBCLASS 273 / 153 P
.~ Pyramid building

Current as of: June, 1999
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273 /   HD   AMUSEMENT DEVICES: GAMES

153 R  DF  PUZZLES {6}
153 P.~ Pyramid building

Unofficial Alpha Subclasses: R P S J

DEFINITION

Classification: 273/153

(under the class definition) Devices known as puzzles.