US PATENT SUBCLASS 134 / 136
.~ Work holder in form of valved plunger

Current as of: June, 1999
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134 /   HD   CLEANING AND LIQUID CONTACT WITH SOLIDS

*  DD  APPARATUS {34}
136.~ Work holder in form of valved plunger

DEFINITION

Classification: 134/136

(under the class definition) Apparatus which includes a workholder which is adapted to act as a plunger, or pump piston and which has a valve for allowing fluid flow in one direction but not in the opposite direction.