US PATENT SUBCLASS 406 / 35
.~ Audible

Current as of: June, 1999
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406 /   HD   CONVEYORS: FLUID CURRENT

34  DF  WITH SIGNAL, INDICATOR, OR INSPECTION MEANS {3}
35.~ Audible

DEFINITION

Classification: 406/35

Audible:

(under subclass 34) Subject matter wherein a signal is transmitted in the form of sound waves.