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characterised by the shape of the filament

characterised by the shape of the filament · 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 codeF21S41/166
Official titlecharacterised by the shape of the filament
Display labelcharacterised by the shape of the filament
Total patents3

Filing trend

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

Filing activity appears stable based on the most recent years.

Patents filed per year
YearPatents
20181
20191
20201

Representative patents

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