US PATENT SUBCLASS 123 / FOR 103
.~.~ Multiple diaphragms (123/408)

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 103.~.~ Multiple diaphragms (123/408)

DEFINITION

Classification: 123/FOR.103

Multiple diaphragms:

Subject matter in which the vacuum actuated control means utilizes a plurality of diaphragms.