US PATENT SUBCLASS 123 / 190.16
.~.~ Lubricant


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

188.1  DF  VALVE {10}
190.1  DF  .~ Rotary {7}
190.16.~.~ Lubricant


DEFINITION

Classification: 123/190.16

Lubricant:

(under subclass 190.1) Apparatus having means to reduce the friction of the rotary valve.