US PATENT SUBCLASS 122 / 399
.~.~ Surface and bottom exit

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

Internet Version by PATENTEC © 1999      Terms of Use


122 /   HD   LIQUID HEATERS AND VAPORIZERS

379  DF  CLEANING {9}
397  DF  .~ Trapped circuit {3}
399.~.~ Surface and bottom exit

DEFINITION

Classification: 122/399

(under subclass 397) Devices with means for withdrawing the water from the boiler into the circulation conduits from the top or the bottom, or both.

SEE OR SEARCH THIS CLASS, SUBCLASS:

202, and 381, for blow-off devices taking the water from either the surface or the bottom.

382+, for special features of outlets.

389, for surface blow-off devices and for "skimmers" adapted to be used on the surface outlets of the circuit devices of this subclass.