(under subclass 200) Apparatus wherein the battery is to be heated substantially entirely by radiations from a body.
SEE OR SEARCH THIS CLASS, SUBCLASS:
206, for solar energy type power generators.
243+, for photoelectric primary batteries.
SEE OR SEARCH CLASS
250, Radiant Energy,
336.1+, for detection of invisible radiant energy and subclasses 200+ for light responsive photocell circuits and apparatus. 374, Thermal Measuring and Testing,
121+, for such subject matter combined with a measuring circuit.
