US PATENT SUBCLASS 122 / 474
.~.~.~ Superheater

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

459  DF  STEAM TREATMENT {7}
*  DD  .~ Water tube boiler {7}
*  DD  .~.~ Over bridge wall {1}
474.~.~.~ Superheater

DEFINITION

Classification: 122/474

(under subclass 459) Subject matter comprising superheaters for water tube boilers having banks of tubes over the bridge wall.