US PATENT SUBCLASS 122 / 72
.~.~ Projecting into firebox

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

44.1  DF  FIRE TUBE {11}
51  DF  .~ Horizontal {22}
72.~.~ Projecting into firebox {1}
73  DF  .~.~.~> Drop water firebox

DEFINITION

Classification: 122/72

(under subclass 51) Devices having the end of the boiler projecting into the firebox or overhanging the fire grate.