(under the class definition) Subject matter s which includes means in combination with material within or on the surface of the earth to, (1) expose the material to radiation, (2) to detect radiation emanating naturally from the material or (3) to detect radiation modified or caused by the material interacting with radiation produced by the means to expose the material to radiation, and methods therefor.
(1) Note. The material within or on the surface of the earth includes the surface of, underneath the surface of or the bottom of a naturally occurring body of water.
(2) Note. The irradiation of material includes material within or about a well.
SEE OR SEARCH CLASS
73, Measuring and Testing,
152.01+, for measuring a characteristic of a borehole, a borehole casing, or a drill rigging wherein the measuring is not purely electrical or purely magnetic.
181, Acoustics, .5, for geophysical exploration by use of seismic waves.
324, Electricity: Measuring and Testing,
323+, for geophysical surface and subsurface examination using electrical tests and electromagnetic waves below the infrared frequency band in the electromagnetic spectrum.
367, Communications, Electrical: Acoustic Wave Systems and Devices,
14+, for seismic prospecting using electrical acoustic wave systems.
436, Chemistry: Analytical and Immunological Testing,
25+, for methods of prospecting using chemical analysis.
