US PATENT SUBCLASS 473 / FOR 170
.~.~ Metal shell (273/72A)

Current as of: June, 1999
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473 /   HD   GAMES USING TANGIBLE PROJECTILE

FOR 168  DF  BAT, MALLET, RACKET, OR BILLY (273/67R) {23}
FOR 169  DF  .~ Baseball (273/72R) {1}
FOR 170.~.~ Metal shell (273/72A)