CPC F28F21/04
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CPC F28F21/04 is a technology classification of patents about construction of heat-exchange apparatus of ceramic, concrete, or natural stone.[1][2]
Tech classification tree:
- CPC F28F Details of heat-exchange and heat-transfer apparatus for general application (water and air traps, air venting CPC F16)
- CPC F28F21/00 Constructions of heat-exchange apparatus characterised by their materials (coatings for modifying heat-transfer CPC F28F13/18; coatings to prevent formation of deposits or corrosion CPC F28F19/02)
- CPC F28F21/04 of ceramic; of concrete; of natural stone
- CPC F28F21/045 for domestic or space-heating system
- CPC F28F21/04 of ceramic; of concrete; of natural stone
- CPC F28F21/00 Constructions of heat-exchange apparatus characterised by their materials (coatings for modifying heat-transfer CPC F28F13/18; coatings to prevent formation of deposits or corrosion CPC F28F19/02)
References
- ↑ CPC F28F21/04 element at Espacenet web site
- ↑ CPC F28F21/04 element listed at USPTO
This wiki has 0 patents in category "CPC F28F21/04".
| Enclosing categories | CPC F28F21/00, CPC F28F |
|---|---|
| Subcategories | CPC F28F21/045 |
| Keywords | heat-transfer, Construction |
| Start year | |
| End year |
