242 / | HD | WINDING, TENSIONING, OR GUIDING |
364 | DF | UNIDIRECTIONAL WINDING AND UNWINDING {9} |
364.6 | DF | .~ Variable number of windings on support {3} |
364.9 | DF | .~.~ Rotating winding surface {3} |
365.2 | .~.~.~ Single material strand simultaneously wound into or unwound from plural coils |