US PATENT SUBCLASS 73 / 452
.~.~ Continuous test fluid supply

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

32 R  DF  SPECIFIC GRAVITY OR DENSITY OF LIQUID OR SOLID {7}
451  DF  .~ Float operated indicator {3}
452.~.~ Continuous test fluid supply

DEFINITION

Classification: 73/452

(under subclass 451) Devices with means to continuously supply or circulate fluid under test to the float.

SEE OR SEARCH THIS CLASS, SUBCLASS:

434, and 445, for similar supply means on other types of specific gravity testers.