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Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems

Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems · 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	F41A13/00
Official title	Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
Display label	Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
Total patents	5

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.