US PATENT SUBCLASS 432 / 55
WITH CONCURRENT CONTROL OR INTER-CONTROL OF DIVERSE OPERABLE ELEMENTS

Current as of: June, 1999
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432 /   HD   HEATING

55WITH CONCURRENT CONTROL OR INTER-CONTROL OF DIVERSE OPERABLE ELEMENTS {2}
56  DF  .~> Door or baffle movement correlated with work movement or placement
57  DF  .~> Heating gas supply, removal or recirculation correlated with work or door movement or placement

DEFINITION

Classification: 432/55

(under the class definition) Apparatus in which means are

provided for relating various parts of the heating apparatus so that upon operation of one part another operating part is cut-off, disabled, stopped or operated.