US PATENT SUBCLASS 122 / *
.~.~ Circulation tube

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

135.1  DF  FLUE {4}
155.1  DF  .~ Vertical {16}
*.~.~ Circulation tube {1}
159  DF  .~.~.~> Internal