US PATENT SUBCLASS 222 / 618
.~.~.~ Plural ground wheel driven discharge assistants in series

Current as of: June, 1999
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222 /   HD   DISPENSING

173  DF  WITH CASING OR SUPPORT {11}
608  DF  .~ Ambulant {6}
613  DF  .~.~ Dispensing means driven or controlled by surface contact {9}
618.~.~.~ Plural ground wheel driven discharge assistants in series

DEFINITION

Classification: 222/618

Plural ground wheel driven discharge assistants in series:

(under subclass 613) Device including two or more distinct ground driven discharge assistants arranged in succession along the path of the material to be discharged such that the material is operated upon sequentially by each discharge assistant.