US PATENT SUBCLASS 166 / 119
.~.~ Relatively movable packers or plugs

Current as of: June, 1999
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166 /   HD   WELLS

179  DF  PACKERS OR PLUGS {17}
118  DF  .~ With expanding anchor {12}
119.~.~ Relatively movable packers or plugs

DEFINITION

Classification: 166/119

(under subclass 118) Devices wherein there are at least two packers or plugs so arranged that all portions of the sealing part of one are bodily movable with respect to all portions of the sealing part of the other while the device is in unitary condition in the well.

SEE OR SEARCH THIS CLASS, SUBCLASS:

123, for devices having expanding anchors and packers or plugs in which one packer or plug is detachable from another in the well.