DIFF Subgroup
H01K 1/32 provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
Introduced: September 1968
Full Title
Details > Envelopes; Vessels > provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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