Extraction valve and vacuum collection system
US-2025189050-A1 · Jun 12, 2025 · US
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for public or main systems
for public or main systems · Cooperative Patent Classification (CPC)
Building, mining, and civil engineering structures.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | E03F1/007 |
| Official title | {for public or main systems} |
| Display label | for public or main systems |
| Total patents | 5 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2017 | 3 |
| 2023 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Runoff yield calculation method and device based on double free reservoirs, and storage medium
US-2023059267-A1 · Feb 23, 2023 · US
Grey water interface valve liquid level sensor system
US-2017320576-A1 · Nov 9, 2017 · US
Method for operating a wastewater pumping station
US-9719241-B2 · Aug 1, 2017 · US
Grey water interface valve liquid level sensor system
US-9718549-B2 · Aug 1, 2017 · US