US PATENT SUBCLASS 251 / 63
.~.~ Unitary piston and valve

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


251 /   HD   VALVES AND VALVE ACTUATION

12  DF  FLUID ACTUATED OR RETARDED {12}
62  DF  .~ Piston type expansible chamber reciprocating valve actuator {3}
63.~.~ Unitary piston and valve

DEFINITION

Classification: 251/63

(under subclass 62) Subject matter wherein the piston and the valve forms a unitary structure.