US PATENT SUBCLASS 123 / 487
.~.~.~.~ Having an up or up-down counter in circuit

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

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
445  DF  .~ Fuel injection system {5}
472  DF  .~.~ Electrically actuated injector {5}
478  DF  .~.~.~ Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve) {15}
487.~.~.~.~ Having an up or up-down counter in circuit

DEFINITION

Classification: 123/487

Having an up or up-down counter in circuit:

(under subclass 478) Subject matter wherein said injector valve control means includes up or up-down counter means.