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for checking gun barrels

for checking gun barrels · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeF41A31/02
Official titlefor checking gun barrels
Display labelfor checking gun barrels
Total patents10

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20151
20163
20182
20191
20202
20211

Representative patents

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