US PATENT SUBCLASS 96 / 419
.~ Sound signal


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



96 /   HD   GAS SEPARATION: APPARATUS

417  DF  WITH SIGNALS, INDICATORS, MEASURING, OR TESTING MEANS {6}
419.~ Sound signal


DEFINITION

Classification: 96/419

Sound signal:

(under subclass 417) Apparatus in which the information giving means is a device that generates a vibratory disturbance in the pressure and density of a fluid that may be perceived by the unaided human ear.