US PATENT SUBCLASS 473 / 144
.~.~.~ Linear spring indicator

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

131  DF  GOLF {23}
139  DF  .~ Anchored (e.g., tethered, etc.) projectile {8}
143  DF  .~.~ With force or direction indicator and tether {1}
144.~.~.~ Linear spring indicator

DEFINITION

Classification: 473/144

Linear spring indicator:

(under subclass 143) Subject matter wherein the device comprises a resilient part which is stretched or compressed along a straight line.