US PATENT SUBCLASS 123 / FOR 105
.~.~ Including sensor responsive to barometric pressure to alter vacuum level (123/410)

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

FOR 101  DF  SPARK IGNITION TIMING CONTROL (123/406) {16}
FOR 102  DF  .~ Vacuum timing control (123/407) {4}
FOR 105.~.~ Including sensor responsive to barometric pressure to alter vacuum level (123/410)

DEFINITION

Classification: 123/FOR.105

Including sensor responsive to barometric pressure to alter vacuum level:

Subject matter wherein means responsive to barometric or atmospheric pressure acts to vary the pressure or level of the actuating vacuum.