US PATENT SUBCLASS 431 / 47
.~.~.~ With manual igniter actuation

Current as of: June, 1999
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431 /   HD   COMBUSTION

18  DF  TIMER, PROGRAMMER, RETARDER OR CONDITION RESPONSIVE CONTROL {26}
42  DF  .~ Sensor of first burner controls second burner, e.g., pilot and main, etc. {8}
43  DF  .~.~ With electrical igniter {4}
47.~.~.~ With manual igniter actuation

DEFINITION

Classification: 431/47

(under subclass 43) Apparatus in which the igniter is energized or deenergized manually.