103 for comminutors employing balls or rolls supported on frictional drive surfaces (ball chasers), also see subclasses 173+, below.
(comminutors; employing; balls or rolls supported on frictional drive surfaces (ball chasers)) (balls or rolls; supported; L:on frictional drive surfaces) (103 for comminutors; also see below; subclasses)
comminutors balls or rolls 103 for comminutors
employing supported also see below
balls or rolls supported on frictional drive surfaces (ball chasers)
L:on frictional drive surfaces
subclasses