US PATENT SUBCLASS 373 / 106
.~.~.~.~ Using a hydraulic or pneumatic device

Current as of: June, 1999
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373 /   HD   INDUSTRIAL ELECTRIC HEATING FURNACES

60  DF  ARC FURNACE DEVICE {9}
102  DF  .~ Power supply system {4}
104  DF  .~.~ With power regulation {1}
105  DF  .~.~.~ By changing arc length {1}
106.~.~.~.~ Using a hydraulic or pneumatic device

DEFINITION

Classification: 373/106

Using hydraulic or pneumatic device:

(under subclass 105) Subject matter wherein the adjustment means includes a hydraulically, or pneumatically operated means.