US PATENT SUBCLASS 136 / 238
.~.~ Chalcogenide containing (S, O, Te, Se)

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

200  DF  THERMOELECTRIC {15}
236.1  DF  .~ Having particular thermoelectric composition {5}
238.~.~ Chalcogenide containing (S, O, Te, Se)

DEFINITION

Classification: 136/238

(under subclass 236.1) Apparatus wherein the composition

contains sulphur, oxygen, tellurium or selenium.