US PATENT SUBCLASS 122 / 357
.~.~.~ Longitudinal drum


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

235.11  DF  WATER TUBE {52}
355  DF  .~ Zigzag {3}
*  DD  .~.~ Over bridge wall {2}
357.~.~.~ Longitudinal drum


DEFINITION

Classification: 122/357

(under subclass 355) Devices having a longitudinally posited drum above the tubes, which extend in a zigzag manner over the bridge wall.

SEE OR SEARCH THIS CLASS, SUBCLASS:

273+, for other types of water tube boilers having a longitudinal drum.