US PATENT SUBCLASS 226 / 143
.~ With means to effect feed and retrograde movement

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

120  DF  BY INTERMITTENT (INTERRUPTED) MATERIAL-MOVER {13}
143.~ With means to effect feed and retrograde movement

DEFINITION

Classification: 226/143

(under subclass 120) Device including means to retract at least a portion of the material.

(1) Note. Patents disclosing a device wherein the means which directly engages the material for causing forward movement thereof is separate and distinct from the means for causing retrograde movement thereof have been placed in plural material-moving means, above.