US PATENT SUBCLASS 122 / 448.3
.~ Multiple boiler regulation

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

448.1  DF  AUTOMATIC CONTROL OF FLUID FUEL AND WATER {3}
448.3.~ Multiple boiler regulation

DEFINITION

Classification: 122/448.3

Multiple boiler regulation:

(under subclass 448.1) Devices wherein a plurality of boilers are controlled.