US PATENT SUBCLASS 324 / 395
.~.~ Using an illuminating device to indicate spark plug condition


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



324 /   HD   ELECTRICITY: MEASURING AND TESTING

378  DF  INTERNAL-COMBUSTION ENGINE IGNITION SYSTEM OR DEVICE {12}
393  DF  .~ In situ testing of spark plug {5}
395.~.~ Using an illuminating device to indicate spark plug condition


DEFINITION

Classification: 324/395

Using an illuminating device to indicate spark plug condition:

(under subclass 393) Subject matter wherein a glow device (e.g., lamp bulb, neon tube, etc.) indicates whether or not a spark plug is operating properly.