US PATENT SUBCLASS 100 / 146
.~.~ Right and left helices

Current as of: June, 1999
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100 /   HD   PRESSES

144  DF  CONCURRENT PRESSING AND CONVEYING {5}
145  DF  .~ Helix-type compressor {5}
146.~.~ Right and left helices

DEFINITION

Classification: 100/146

(under subclass 145) Apparatus in which the material is forwarded by plural parallel rotating finned members turning oppositely.