US PATENT SUBCLASS 166 / 68
.~ Eduction pump or plunger in well

Current as of: June, 1999
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166 /   HD   WELLS

67  DF  WITH BELOW AND ABOVE GROUND MODIFICATION {6}
68.~ Eduction pump or plunger in well {1}
68.5  DF  .~.~> With above ground (1) motor carried by casing or casing support or (2) well fluid pump

DEFINITION

Classification: 166/68

(under subclass 67) Devices comprising pump or plunger means situated in the well for drawing fluid out of the well or into a receptacle which is then taken out of the well.

(1) Note. See the class definition of Class 166 for the line with Class 417.

SEE OR SEARCH THIS CLASS, SUBCLASS:

61, and 62, for well devices for heating or refrigerating combined with an eduction pump in a well.