US PATENT SUBCLASS 166 / 90.1
.~ With means for inserting fluid into well

Current as of: June, 1999
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166 /   HD   WELLS

75.11  DF  ABOVE GROUND APPARATUS {25}
90.1.~ With means for inserting fluid into well

DEFINITION

Classification: 166/90.1

With means for inserting fluid into the well:

(under subclass 75.11) Above ground apparatus comprising a constricted tube to speed flow for introducing gas or liquid into a well casing, casing head or tubing.

SEE OR SEARCH THIS CLASS, SUBCLASS:

88.1+, for well casing heads having lateral ports which may be employed to introduce a fluid into said casing in combination with the inner members sealed or anchored with respect to the casing head.