.~ Indicating, testing or measuring a condition of the formation
DEFINITION
Classification: 175/50
(under subclass 40) Subject matter comprising a step or means for determining the characteristics of the earth formation traversed by a boring tool.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41, for indicating, measuring or testing a condition of the formation involving the detection or measuring of ray energy.
44, for indicating, measuring or testing a condition of the formation involving taking of a core sample.
48, for indicating, testing or measuring a condition of the formation involving a change in drilling fluid pressure or rate of flow.
SEE OR SEARCH CLASS 73, Measuring and Testing,
81+, for measuring the hardness of a material by employing a device which measures the force required to penetrate the material, and subclasses 152.01+ for measuring and testing, relating to the earth formation in a borehole.
324, Electricity: Measuring and Testing,
323+, for a process or means for measuring an electrical characteristic of the earth formation in or around a borehole.
