US PATENT SUBCLASS 73 / 335.07
.~.~.~.~ With direct readout or calculator detail


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

23.2  DF  GAS ANALYSIS {15}
29.01  DF  .~ Moisture content or vapor pressure {4}
29.02  DF  .~.~ Hygrometer {4}
335.06  DF  .~.~.~ Wet and dry responsive elements {2}
335.07.~.~.~.~ With direct readout or calculator detail


DEFINITION

Classification: 73/335.07

With direct readout or calculator detail:

(under subclass 335.06) Subject matter wherein significance is attributed to either means for providing at an immediate glance a single observation of the difference in the temperature of the wet responsive element and the dry responsive element or to means manipulated in such a manner as to provide at an immediate glance a single observation of the difference in the temperature of the wet responsive element and the temperature of the dry responsive element.

SEE OR SEARCH CLASS

235, Registers, appropriate subclass for a register, per se, for detecting the relative humidity from a psychrometer reading or for a register combined with conventional nominally recited elements of hygrometer.

364, Electrical Computers and Data Processing Systems,

509, and 550+ for an electrical computer or a data processing system, per se, for a hygrometer or in combination with a conventional hygrometric element recited in name only.

377, Electrical Pulse Counter, Pulse Dividers, or Shift Registers: Circuits and Systems,

9+, for a pulse counter, per se, for a hygrometer or the combination of a conventional hygrometric element recited in name only.