US PATENT SUBCLASS 505 / 909
.~ Power plant: (Class 60)

Current as of: June, 1999
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505 /   HD   SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS

825  DF  APPARATUS, PER SE, DEVICE, PER SE, OR PROCESS OF MAKING OR OPERATING SAME {36}
909.~ Power plant: (Class 60)

DEFINITION

Classification: 505/909

Power plant: (Class 60):

(under subclass 825) Subject matter involving the driving of a load by means of conversion of heat, pressure, radiant, gravitational, or other energy source into mechanical motion.