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with automatic feed by pressure during use of pencil

with automatic feed by pressure during use of pencil · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

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CPC classification statistics
Metric	Value
CPC code	B43K21/033
Official title	with automatic feed by pressure during use of pencil
Display label	with automatic feed by pressure during use of pencil
Total patents	8

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is stable.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.