F28F21/045 - CPC Classification Index

ClassID:

162250 ⎘

F28F21/045 - CPC Classification

Classification description:

Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone for domestic or space-heating systems

Recent Application in this class:

20220099335

2022-03-31

Diffuser plates and diffuser plate assemblies

20200033026

2020-01-30

Diffuser plates and diffuser plate assemblies

20180320991

2018-11-08

Diffuser plates and diffuser plates assemblies

20110155716

2011-06-30

STONE PANEL

20050280183

2005-12-22

Method and device for producing corrugated sheet material