US PATENT SUBCLASS 116 / 138
.~ Motor exhaust or suction

Current as of: June, 1999
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116 /   HD   SIGNALS AND INDICATORS

137 R  DF  HORNS, WHISTLES AND COMPRESSIONAL WAVE GENERATORS {6}
138.~ Motor exhaust or suction

DEFINITION

Classification: 116/138

(under subclass 137) Devices wherein the exhaust or suction intake of a fluid-pressure motor is utilized for sounding the horn or whistle, diaphragm-horns being excluded.

SEE OR SEARCH THIS CLASS, SUBCLASS:

58, for vehicle energy actuated pneumatic signals.

216+, for pneumatic signals.