US PATENT SUBCLASS 60 / 676
.~.~ Including plural distinct boilers, heat supplies or external sources of vapor

Current as of: June, 1999
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60 /   HD   POWER PLANTS

643  DF  MOTIVE FLUID ENERGIZED BY EXTERNALLY APPLIED HEAT {11}
670  DF  .~ Power system involving change of state {6}
676.~.~ Including plural distinct boilers, heat supplies or external sources of vapor

DEFINITION

Classification: 60/676

(under subclass 670) Apparatus, (1) in which a second vapor generator or an external source of vapor furnishes a supplemental quantity of motive fluid to a power system including a first vapor generator or (2) having more than one distinct means supplying heat to the apparatus.