US PATENT SUBCLASS 122 / 504.1
.~ Fusible control

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

504  DF  SAFETY DEVICES {4}
504.1.~ Fusible control

DEFINITION

Classification: 122/504.1

(under subclass 504) Subject matter containing a fusible

element which fuses, generally when the water-level falls below a certain limit, and sounds an alarm or allows the steam-pressure to fall.