US PATENT SUBCLASS 451 / 118
.~.~.~ Slide valve

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
114  DF  .~ By use of plural work holders, without tool {1}
115  DF  .~.~ Of valve and seat {3}
118.~.~.~ Slide valve

DEFINITION

Classification: 451/118

Slide valve:

(under subclass 115) Abrading machine by which a slide valve and its seat are abraded to a fit by mutual moving contact.