US PATENT SUBCLASS 123 / 671
.~ Cylinder head shape conforms to piston shape

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

657  DF  COMBUSTION CHAMBER {11}
671.~ Cylinder head shape conforms to piston shape

DEFINITION

Classification: 123/671

Cylinder head shape conforms to piston shape:

(under subclass 657) Subject matter in which the general shape or contour of a significant portion of the cylinder head follows the piston shape.