US PATENT SUBCLASS 237 / 4
.~.~ Water

Current as of: June, 1999
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237 /   HD   HEATING SYSTEMS

2 R  DF  AUTOMATIC CONTROL {9}
3  DF  .~ Brooder and incubator {1}
4.~.~ Water

DEFINITION

Classification: 237/4

(under subclass 3) Automatic control for water-circulating heaters for incubators.