(under subclass 113) Subject matter wherein the mechanical process or structure is in the science that deals with mechanical properties of gas or practical application of liquid in motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
12+, for fluid investigation in earth formation of a well logging or borehole measurement system.
45+, for flow metering.
50+, for fluid measurement.
100, for calibration or correction of fluid or fluid flow measurement.
SEE OR SEARCH CLASS
73, Measuring and Testing, 1.68, for measuring or testing of blower, pump, and hydraulic equipment.
364, Electrical Computers and Data Processing System,
528.16, for control of fluid level or volume, and subclasses 528.17+ for flow control.
