US PATENT SUBCLASS 166 / 64
WITH TIME OR DISTANCE MEASURING, TEMPERATURE RESPONSIVE OR COUNTING MEANS


Current as of: June, 1999
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166 /   HD   WELLS

64WITH TIME OR DISTANCE MEASURING, TEMPERATURE RESPONSIVE OR COUNTING MEANS


DEFINITION

Classification: 166/64

(under the class definition) Devices combined with means for measuring time or distance, responding to temperature changes for performing some function, or counting objects such as joint couplings.

(1) Note. A mere delayed action response to a condition such as provided by a damper is not considered time measuring. Such devices are classified on other bases.

(2) Note. Means with indicia to indicate the position of adjustment of a device such as a valve or telescoping part are not included in this subclass. Such a means in combination with a well device would be classifiable in subclass 113.

SEE OR SEARCH CLASS

33, Geometrical Instruments, appropriate subclasses for means for measuring distance.

235, Registers, appropriate subclasses for counters, per se. 364, Electrical Computers and Data Processing Systems,

556+, for the basic measurements of temperature, distance, or time which include a computation.

374, Thermal Measuring and Testing,

136, for subsurface temperature determination other than for strata identification.