US PATENT SUBCLASS 432 / 90
BOILER AND WORK HEATING FURNACE, POT OR OVEN

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

Internet Version by PATENTEC © 1999      Terms of Use


432 /   HD   HEATING

90BOILER AND WORK HEATING FURNACE, POT OR OVEN {1}
91  DF  .~> Having means utilizing generated steam in heating work

DEFINITION

Classification: 432/90

(under the class definition) Apparatus including a chamber in which heat is applied to work and an associated structure in which vapor is generated from a liquid by the application of heat.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers,

7, for a nominal material heating furnace and a closed water chamber or conduit located so as to be heated by the waste heat of the furnace.