F22B21/12 - CPC Classification Index

ClassID:

155519 ⎘

F22B21/12 - CPC Classification

Classification description:

Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially straight water tubes involving two or more upper drums and two or more lower drums, e.g. with crosswise-arranged water-tube sets in abutting connections with drums

Sub-classes:

F22B21/123 » {involving crossed water tubes} 0
F22B21/126 » {involving more than two lower or upper drums} 1

Recent Application in this class:

20130048245

2013-02-28

Heat Exchanger Having Improved Drain System