US PATENT SUBCLASS 73 / 863.55
.~.~.~ Oscillating

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

863  DF  SAMPLER, SAMPLE HANDLING, ETC. {11}
863.41  DF  .~ Flow divider, deflector, or interceptor {4}
863.51  DF  .~.~ Having an upstream-facing-opening-type capture element {6}
863.55.~.~.~ Oscillating

DEFINITION

Classification: 73/863.55

Oscillating:

(under subclass 863.51) Subject matter having means for mounting the capture element for back and forth movement in a substantially arcuate path into or across the stream of source material.