US PATENT SUBCLASS 123 / 293
.~.~ Having multiple passages

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

253  DF  PRECOMBUSTION AND MAIN COMBUSTION CHAMBERS IN SERIES {22}
286  DF  .~ Having specific connecting passage means between precombustion and main combustion chambers {5}
293.~.~ Having multiple passages

DEFINITION

Classification: 123/293

Having multiple passages:

(under subclass 286) Subject matter wherein there are multiple connecting passages or divisions of a single passage between the pre and main chambers.