US PATENT SUBCLASS 237 / 64
.~.~.~ Steam displacing

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

Internet Version by PATENTEC © 1999      Terms of Use


237 /   HD   HEATING SYSTEMS

56  DF  WATER {5}
59  DF  .~ Circulation {4}
63  DF  .~.~ Pump {1}
64.~.~.~ Steam displacing

DEFINITION

Classification: 237/64

(under subclass 63) Subject matter wherein the pump consists of a chamber where water enters and is forced out by means of steam pressure.