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following unproven scientific theories; Theories about perpetual motion

following unproven scientific theories; Theories about perpetual motion · Cooperative Patent Classification (CPC)

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

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CPC classification statistics
Metric	Value
CPC code	F03G7/135
Official title	{following unproven scientific theories; Theories about perpetual motion}
Display label	following unproven scientific theories; Theories about perpetual motion
Total patents	6

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

Filing activity appears stable based on the most recent years.

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