US PATENT SUBCLASS 446 / 171
.~ And means for automatically recycling element

Current as of: June, 1999
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446 /   HD   AMUSEMENT DEVICES: TOYS

168  DF  INCLUDING UNATTACHED GRAVITY-FED ROLLING, TUMBLING, OR ENERGY-IMPARTING FALLING ELE ENT, OR PATHWAY THEREFOR (E.G., MARBLE RUNWAY) {4}
171.~ And means for automatically recycling element {1}
172  DF  .~.~> Hand-cranked element conveyer

DEFINITION

Classification: 446/171

And means for automatically recycling element:

(under subclass 168) Device including means to return an element back to its starting point without manual handling after it has rolled or fallen under the force of gravity.