US PATENT SUBCLASS 123 / 193.4
.~.~ Having detail to guiding structure cooperating with cylinder

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

193.1  DF  PARTICULAR PISTON AND ENCLOSING CYLINDER CONSTRUCTION {3}
193.6  DF  .~ Piston {1}
193.4.~.~ Having detail to guiding structure cooperating with cylinder

DEFINITION

Classification: 123/193.4

Having detail to guiding structure cooperating with cylinder:

(under subclass 193.6) Apparatus wherein the piston has a specific surface or formation cooperating with the chamber.