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Paving take-off areas for vertically starting aircraft (landing platforms for helicopters E01F3/00)

Paving take-off areas for vertically starting aircraft (landing platforms for helicopters E01F3/00) · Cooperative Patent Classification (CPC)

Building, mining, and civil engineering structures.

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CPC classification statistics
Metric	Value
CPC code	E01C9/008
Official title	{Paving take-off areas for vertically starting aircraft (landing platforms for helicopters E01F3/00)}
Display label	Paving take-off areas for vertically starting aircraft (landing platforms for helicopters E01F3/00)
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.