F22B37/221 - CPC Classification Index

ClassID:

155673 ⎘

F22B37/221 - CPC Classification

Classification description:

Component parts or details of steam boilers applicable to more than one kind or type of steam boiler; Drums; Headers; Accessories therefor Covers for drums, collectors, manholes or the like

Sub-classes:

F22B37/222 » {Nozzle dams introduced through a smaller manway, e.g. foldable} 3
F22B37/223 » {Boiler plugs, e.g. for handholes } 4

Recent Application in this class:

20240409132

2024-12-12

Manway Relief for a Tank Car

20210221409

2021-07-22

Manway relief for a tank car

20200363055

2020-11-19

L-shaped header of steam generator including spiral tube and a coupling structure of L-shaped header and tube

20160031638

2016-02-04

Pipe-closing device for isolating a tank, a pipe or a set of tanks and pipes

20100181781

2010-07-22

Access door with inside latch release