CPC F28F21/045
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CPC F28F21/045 is a technology classification of patents for those about XYZ.[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 the selection of particular materials (coatings for modifying heat-transfer CPC F28F13/18; coatings for preventing the 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 the selection of particular materials (coatings for modifying heat-transfer CPC F28F13/18; coatings for preventing the formation of deposits or corrosion CPC F28F19/02)
References
- ↑ CPC F28F21/045 element at Espacenet web site
- ↑ CPC F28F21/045 element listed at USPTO
This wiki has 1 patents in category "CPC F28F21/045".
Patents in category CPC F28F21/045
- Patent FR-1906-372168 (English title: Dirigibles moved by propellers, Inventors: Joseph Deixler, Filing date: 1906-12-06)
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