US PATENT SUBCLASS 166 / 229
.~ Inserted screen plug

Current as of: June, 1999
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166 /   HD   WELLS

227  DF  SCREENS {7}
229.~ Inserted screen plug

DEFINITION

Classification: 166/229

(under subclass 227) Devices comprising an element of limited extent such as a plug having a straining opening or openings and positioned at least partially within a hole or recess in a conduit wall.