US PATENT SUBCLASS 137 / 637.2
.~.~ Coaxial stems

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

Internet Version by PATENTEC © 1999      Terms of Use


137 /   HD   FLUID HANDLING

561 R  DF  SYSTEMS {32}
637  DF  .~ Valves with separate, correlated, actuators {3}
637.2.~.~ Coaxial stems {1}
637.3  DF  .~.~.~> Rotary {2}

DEFINITION

Classification: 137/637.2

(under subclass 637) Subject matter in which at least two independently actuable valves are provided with stem type actuators, each of which move about or along a common axis.