US PATENT SUBCLASS 122 / 406.3
.~ Having restrictors and orifices

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

406.1  DF  CIRCULATION {7}
406.3.~ Having restrictors and orifices

DEFINITION

Classification: 122/406.3

Having restrictors or orifices:

(under subclass 406.1) Devices having outlets or means to confine a fluid during circulation.