.~ With radiant energy or nonconductive-type receiver
DEFINITION
Classification: 324/344
With radiant energy or nonconductive-type receiver:
(under subclass 323) Subject matter having means for receiving electrostatic or electromagnetic energy from above or below the surface of the earth.
(1) Note. The means, for example, may be responsive to radiant energy produced by natural sources but not by artificial sources. Receivers responsive to energy produced by an artificial source are classifiable elsewhere.
SEE OR SEARCH THIS CLASS, SUBCLASS:
332+, for this subject matter having transmitter means to radiate electrostatic or electromagnetic energy into the earth.
334, for receivers responsive to energy produced by an artificial source.
359, for a radiant energy pickup means responsive to radiant energy produced by artificial earth currents.
