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Passages of down pipes through walls or floors

Passages of down pipes through walls or floors · Cooperative Patent Classification (CPC)

Building, mining, and civil engineering structures.

Related technology areas

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CPC classification statistics
Metric	Value
CPC code	E04D2013/0826
Official title	{Passages of down pipes through walls or floors}
Display label	Passages of down pipes through walls or floors
Total patents	7

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.