CPC Subgroup Additional Only
F28D 2021/0028 Full Title
Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
2 direct subcodes
Child Classifications
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F28D 2021/0028 Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
2 direct subcodes
Navigate with arrow keys, Enter to open