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chains; chain links; scraper chains (chains or chain guides E21C25/28)

chains; chain links; scraper chains (chains or chain guides E21C25/28) · Cooperative Patent Classification (CPC)

Building, mining, and civil engineering structures.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	E02F3/143
Official title	{chains; chain links; scraper chains (chains or chain guides E21C25/28)}
Display label	chains; chain links; scraper chains (chains or chain guides E21C25/28)
Total patents	7

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.