US PATENT SUBCLASS 73 / 502
.~ Externally connected pressure gauge gives reading

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

488  DF  SPEED, VELOCITY, OR ACCELERATION {29}
502.~ Externally connected pressure gauge gives reading

DEFINITION

Classification: 73/502

(under subclass 488) Apparatus wherein pressure proportional to speed is communicated to a measuring device through a pipe external of the device.