US PATENT SUBCLASS 166 / 164
.~ With destroyable closure and valve

Current as of: June, 1999
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166 /   HD   WELLS

162  DF  RECEPTACLES {7}
164.~ With destroyable closure and valve

DEFINITION

Classification: 166/164

(under subclass 162) Devices in which there is a closure which is adapted to be broken or otherwise destroyed so that fluid in the well will enter the container and there is also a valve for retaining the fluid in the container.