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for domestic or space-heating systems

for domestic or space-heating 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	F28F21/088
Official title	{for domestic or space-heating systems}
Display label	for domestic or space-heating systems
Total patents	6

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

Filing activity over the last five years is declining.

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