US PATENT SUBCLASS 60 / 39.827
.~.~.~ Spark type

Current as of: June, 1999
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60 /   HD   POWER PLANTS

39.01  DF  COMBUSTION PRODUCTS USED AS MOTIVE FLUID {31}
722  DF  .~ Combustion products generator {14}
39.821  DF  .~.~ With ignition device {7}
39.827.~.~.~ Spark type

DEFINITION

Classification: 60/39.827

Spark type:

(under subclass 39.821) Combustion devices wherein the ignition device comprises structure designed to produce an electrical discharge through normally insulative material, e.g., through air or similar atmospheric substances.