US PATENT SUBCLASS 110 / 324
.~.~ Having concavity for engaging pipe exterior

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


110 /   HD   FURNACES

322  DF  BAFFLE OR HEAT RETAINER STRUCTURE {2}
323  DF  .~ Refractory type {1}
324.~.~ Having concavity for engaging pipe exterior {1}
325  DF  .~.~.~> And structure to bridge pipes

DEFINITION

Classification: 110/324

Having concavity for engaging pipe exterior:

(under subclass 323) Structure wherein the refractory structure is provided with a negatively curved area adapted to mate with the external surface of a boiler tube.