US PATENT SUBCLASS 196 / 117
.~.~ Internal flues

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

Internet Version by PATENTEC © 1999      Terms of Use


196 /   HD   MINERAL OILS: APPARATUS

104  DF  VAPORIZING {22}
116  DF  .~ Furnaces and flues {1}
117.~.~ Internal flues

DEFINITION

Classification: 196/117

(under subclass 116) The combination of furnace with mineral-oil vaporizer having flues for combustion gases passing through the vaporizer.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers,

44.1, and 135.1.

159, Concentrating Evaporators,

28.1+, and 40.