US PATENT SUBCLASS 73 / 335.12
.~.~.~.~ Coiled or twisted

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}
335.11  DF  .~.~.~ Expanding-sorption element {3}
335.12.~.~.~.~ Coiled or twisted

DEFINITION

Classification: 73/335.12

Coiled or twisted:

(under subclass 335.11) Subject matter wherein the humidity responsive means comprises a hygroscopic material attached to a circular or spiral shaped member which winds or unwinds due to changed in dimensions in the hygroscopic material in response to absorption of humidity.