US PATENT SUBCLASS 123 / 406.68
.~.~ Barometric pressure responsive

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

406.11  DF  SPARK IGNITION TIMING CONTROL {5}
406.67  DF  .~ Vacuum timing control {5}
406.68.~.~ Barometric pressure responsive

DEFINITION

Classification: 123/406.68

Barometric pressure responsive:

(under subclass 406.67) Subject matter wherein the regulating means for varying spark ignition timing is responsive to the pressure of the ambient atmosphere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

406.49, for an internal combustion engine spark ignition electronic control responsive to barometric pressure.

SEE OR SEARCH CLASS

73, Measuring and Testing,

384+, for barometric pressure measuring devices, per se.