US PATENT SUBCLASS 505 / 900
.~ Heat exchange: (Class 165)

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}
900.~ Heat exchange: (Class 165) {1}
901  DF  .~.~> Heat pipe

DEFINITION

Classification: 505/900

Heat exchange: (Class 165):

(under subclass 825) Subject matter including a process or device specially adapted for transferring thermal energy from one material to another material or the environment.