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for needles; for teeth for card-clothing

for needles; for teeth for card-clothing · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	C21D9/26
Official title	for needles; for teeth for card-clothing
Display label	for needles; for teeth for card-clothing
Total patents	5

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.