US PATENT SUBCLASS 164 / 510
.~ Electrical discharge knockout means

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

250.1  DF  MEANS TO DIRECTLY APPLY ELECTRICAL OR WAVE ENERGY TO WORK {6}
510.~ Electrical discharge knockout means

DEFINITION

Classification: 164/510

Electrical discharge knockout means:

(under subclass 250.1) Apparatus wherein foundry molds are

stripped from castings by means utilizing high-voltage electrical discharges.