US PATENT SUBCLASS 116 / 169
.~ Tube or rod type

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

148  DF  BELLS {10}
169.~ Tube or rod type

DEFINITION

Classification: 116/169

(under subclass 148) Devices in which a metallic tube or rod is used as a sounding element.