US PATENT SUBCLASS 236 / 76
.~.~ Step-by-step

Current as of: June, 1999
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236 /   HD   AUTOMATIC TEMPERATURE AND HUMIDITY REGULATION

67  DF  MOTORS {7}
74 R  DF  .~ Electric {5}
76.~.~ Step-by-step

DEFINITION

Classification: 236/76

(under subclass 74) Devices which do not operate the controlling means to the limits at a single operation, but give step-by-step action.