US PATENT SUBCLASS 73 / 61.56
.~.~.~.~ Detail of fluid handling means (e.g., valve, control, etc.)

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

53.01  DF  LIQUID ANALYSIS OR ANALYSIS OF THE SUSPENSION OF SOLIDS IN A LIQUID {15}
61.41  DF  .~ Content or effect of a constituent of a liquid mixture {8}
61.43  DF  .~.~ Liquid constituent of a liquid mixture {9}
61.52  DF  .~.~.~ Chromatography {6}
61.56.~.~.~.~ Detail of fluid handling means (e.g., valve, control, etc.)

DEFINITION

Classification: 73/61.56

Detail of fluid handling means (e.g., valve, control, etc.):

(under subclass 61.52) Subject matter wherein significance is attributed to the means for confining, directing, or controlling the flow of liquid material.

SEE OR SEARCH CLASS

141, Fluent Material Handling, With Receiver or Receiver Coacting Means, appropriate subclass, in particularly

21+, 29+, 110, and 130 for a device or method of filling a receiver which is not part of a sampling system.

159, Concentrating Evaporators,

30, for a combination of a concentrating vessel with means for withdrawing a quantity of liquid for examination.

210, Liquid Purification or Separation,

513+, for gravitational separators and especially subclasses 514+ for milk and cream separators. 222, Dispensing, appropriate subclass for subject of that class type which may include an apparatus or process for obtaining a predetermined portion of material from a mass but not for testing purposes.