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Connecting devices between the head or foot of a prop and the cap or base of the roof support

Connecting devices between the head or foot of a prop and the cap or base of the roof support · Cooperative Patent Classification (CPC)

Building, mining, and civil engineering structures.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	E21D23/049
Official title	{Connecting devices between the head or foot of a prop and the cap or base of the roof support}
Display label	Connecting devices between the head or foot of a prop and the cap or base of the roof support
Total patents	5

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.