US PATENT SUBCLASS 73 / 179
.~ Rate of climb (pressure type)

Current as of: June, 1999
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178 R  DF  NAVIGATION {5}
179.~ Rate of climb (pressure type)

DEFINITION

Classification: 73/179

(under subclass 178) Instruments responsive to atmospheric

pressure variations for determining rate of ascent or descent of a craft. The change in pressure may be manifested by flow of fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

384+, for altimeters of barometric pressure type.