US PATENT SUBCLASS 123 / 155
.~.~.~ Pneumatic

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

143 R  DF  IGNITERS {6}
146.5 R  DF  .~ Sparkers {11}
153  DF  .~.~ Make and break {11}
155.~.~.~ Pneumatic

DEFINITION

Classification: 123/155

Sparking devices differing from those defined in the second preceding definition in that the means whereby the movable electrode is actuated and is dependent for its operation upon a gas under pressure.