DIFF Subgroup
F28F 19/02 by using coatings, e.g. vitreous or enamel coatings
Introduced: September 1968
Full Title
Preventing the formation of deposits or corrosion, e.g. by using filters > by using coatings, e.g. vitreous or enamel coatings
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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