US PATENT SUBCLASS 123 / FOR 104
.~.~ Fluid delay in fluid path line from vacuum source (123/409)

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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 104.~.~ Fluid delay in fluid path line from vacuum source (123/409)

DEFINITION

Classification: 123/FOR.104

Fluid delay in fluid path line from vacuum source:

Subject matter in which the fluid path to the actuating motor or means contains a fluid delay means, e.g., restrictive orifice.