(under subclass 861) Volume or rate of flow meters combined with structures other than meters and not otherwise classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
152.31, for the use of a fluid flowmeter combined with other types of measuring in determining a characteristic of a borehole, a well casing, or a drill rigging.
181+, for ships' logs comprising volume or rate of flow meters.
215+, for Weir meters combined with feed water heater structures.
SEE OR SEARCH CLASS 137, Fluid Handling, particularly
98+, 459+, 486+, 494+, and 460 for fluid handling apparatus which includes volume or rate of flow meters.
235, Registers,
61, for meters combined with speedometer means so as to make miles per gallon computations.
251, Valves and Valve Actuation, appropriate subclasses for valves, per se.
374, Thermal Measuring and Testing,
39+, for heat quantity measuring, devices comprising volume meters.
