US PATENT SUBCLASS 251 / 328
.~.~ Seats


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

318  DF  RECIPROCATING VALVE {7}
326  DF  .~ Gate {3}
328.~.~ Seats


DEFINITION

Classification: 251/328

(under subclass 326) Devices comprising the substantially stationary valve element with which the head cooperates to produce the valving action.

SEE OR SEARCH THIS CLASS, SUBCLASS:

359+, for valve seats of general utility.