US PATENT SUBCLASS 166 / 75.15
.~ With means for injecting solid or particulate material into the well

Current as of: June, 1999
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166 /   HD   WELLS

75.11  DF  ABOVE GROUND APPARATUS {25}
75.15.~ With means for injecting solid or particulate material into the well

DEFINITION

Classification: 166/75.15

With means for injecting solid or particulate material into the well:

(under subclass 75.11) Above ground apparatus comprising the particular structure or device for placing balls, cement, etc.