US PATENT SUBCLASS 123 / 502
.~.~.~ Fluid pressure control

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

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
495  DF  .~ With fuel pump {11}
501  DF  .~.~ Variable beginning of pumping stroke {1}
502.~.~.~ Fluid pressure control

DEFINITION

Classification: 123/502

Fluid pressure control:

(under subclass 501) Subject matter wherein said control means utilizes fluid pressure in its operation, e.g., air, lubricant, fuel.