US PATENT SUBCLASS 226 / 151
.~.~ Yieldingly biased

Current as of: June, 1999
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226 /   HD   ADVANCING MATERIAL OF INDETERMINATE LENGTH

120  DF  BY INTERMITTENT (INTERRUPTED) MATERIAL-MOVER {13}
147  DF  .~ With retrograde movement preventer {3}
151.~.~ Yieldingly biased

DEFINITION

Classification: 226/151

(under subclass 147) Device wherein the preventing means is resiliently urged toward engagement.