US PATENT SUBCLASS 122 / 479.5
.~.~ Having dampers

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

459  DF  STEAM TREATMENT {7}
479.1  DF  .~ Automatic heat regulation of superheater {6}
479.5.~.~ Having dampers

DEFINITION

Classification: 122/479.5

Having dampers:

(under subclass 479.1) Devices wherein an adjustable plate controls the draft.