US PATENT SUBCLASS 164 / 314
.~.~.~.~ Hydraulic piston pressure means


Current as of: June, 1999
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164 /   HD   METAL FOUNDING

271  DF  MEANS TO SHAPE METALLIC MATERIAL {12}
284  DF  .~ Pressure shaping means {5}
303  DF  .~.~ Injection type {4}
312  DF  .~.~.~ Piston-cylinder charger {3}
314.~.~.~.~ Hydraulic piston pressure means {1}
315  DF  .~.~.~.~.~> Having multi-way valve control unit


DEFINITION

Classification: 164/314

(under subclass 312) Apparatus wherein the piston is operated

by liquid pressure.