US PATENT SUBCLASS 122 / *
.~.~.~.~ Internal fire 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

209.1  DF  SECTIONAL {9}
*  DD  .~ Horizontal sections {1}
214  DF  .~.~ Superimposed {3}
*  DD  .~.~.~ Water tube {1}
*.~.~.~.~ Internal fire tube {1}
220  DF  .~.~.~.~.~> Water firebox