US PATENT SUBCLASS 266 / 57
.~.~ With means to rotate workpiece

Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

48  DF  MEANS FOR CUTTING SOLID METAL WITH HEAT, E.G., BLOWPIPES {14}
54  DF  .~ With means for cutting tubular workpiece {3}
57.~.~ With means to rotate workpiece

DEFINITION

Classification: 266/57

(under subclass 54) Device including means to revolve the tubular article about its longitudinal axis.