US PATENT SUBCLASS 122 / *
.~.~.~ Water grate

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}
58 R  DF  .~.~ Drop water firebox {11}
*.~.~.~ Water grate {1}
67  DF  .~.~.~.~> Intermediate draft