US PATENT SUBCLASS 251 / 358
.~ Reinforced flexible material

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

356  DF  VALVE {5}
358.~ Reinforced flexible material

DEFINITION

Classification: 251/358

(under subclass 356) Subject matter comprising valves made of resilient material which are either internally or externally stiffened or otherwise reinforced by a diverse material.