US PATENT SUBCLASS 136 / 216
.~.~ Evacuated

Current as of: June, 1999
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136 /   HD   BATTERIES: THERMOELECTRIC AND PHOTOELECTRIC

200  DF  THERMOELECTRIC {15}
213  DF  .~ Radiation pyrometer {2}
216.~.~ Evacuated

DEFINITION

Classification: 136/216

(under subclass 213) Apparatus wherein the pyrometer contains a sealed space which is at substantially less than atmospheric pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

223, for thermoelectric generators in general containing an evacuated space.