US PATENT SUBCLASS 432 / 216
.~ Interconnected separately encased masses

Current as of: June, 1999
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432 /   HD   HEATING

214  DF  HEAT GENERATING MEANS HEATS HEAT STORAGE MASS OF SOLID MATERIAL {3}
216.~ Interconnected separately encased masses

DEFINITION

Classification: 432/216

(under subclass 214) Apparatus in which heat storage masses are contained in two distinct lines connected cases.