US PATENT SUBCLASS 123 / 188.8
.~ Valve seat relation

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

188.1  DF  VALVE {10}
188.8.~ Valve seat relation

DEFINITION

Classification: 123/188.8

Valve seat relation:

(under subclass 188.1) Apparatus having specific characteristics of a stationary opening with which the valve head cooperates.