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specially adapted for raising liquids from great depths, e.g. in wells

specially adapted for raising liquids from great depths, e.g. in wells · Cooperative Patent Classification (CPC)

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

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Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F04F1/20
Official title	specially adapted for raising liquids from great depths, e.g. in wells
Display label	specially adapted for raising liquids from great depths, e.g. in wells
Total patents	11

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

Filing activity over the last five years is rapidly declining.

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