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operated by variations in electrostatic field

operated by variations in electrostatic field · Cooperative Patent Classification (CPC)

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

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F42C13/003
Official title	{operated by variations in electrostatic field}
Display label	operated by variations in electrostatic field
Total patents	2

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

Filing activity appears stable based on the most recent years.

Patents filed per year
Year	Patents
2019	1
2021	1

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