US PATENT SUBCLASS 48 / 54
.~.~.~ Screw

Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

*  DD  ACETYLENE {5}
*  DD  .~ Generators {5}
38  DF  .~.~ Carbide feed {11}
54.~.~.~ Screw

DEFINITION

Classification: 48/54

Generators having a screw conveyer to feed the carbid thereto.