US PATENT SUBCLASS 242 / FOR 192
.~.~ Reversely threaded (242/158.3)

Current as of: June, 1999
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242 /   HD   WINDING, TENSIONING, OR GUIDING

FOR 189  DF  TRAVERSE MECHANISM (242/158 R) {6}
FOR 191  DF  .~ Screw shaft (242/158.2) {1}
FOR 192.~.~ Reversely threaded (242/158.3)

DEFINITION

Classification: 242/FOR.192

Foreign Art Collections for devices in which the shaft is doubly, oppositely screw threaded.