US PATENT SUBCLASS 123 / 284
.~.~ Spherical

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

253  DF  PRECOMBUSTION AND MAIN COMBUSTION CHAMBERS IN SERIES {22}
281  DF  .~ Precombustion chamber shape is a figure of revolution {3}
284.~.~ Spherical

DEFINITION

Classification: 123/284

Spherical:

(under subclass 281) Subject matter wherein the resulting 3-D shape is a sphere.