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USPTO Patent Rankings Data through Sept 30, 2025
CF

Clifford C. Federspiel

El Cerrito, CA: #2 of 4 inventorsTop 50%
California: #8,555 of 28,370 inventorsTop 35%
Overall (2004): #243,730 of 270,089Top 95%
1 Patents 2004

Issued Patents 2004

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6719625 Method and apparatus for controlling variable air volume supply fans in heating, ventilating, and air-conditioning systems 2004-04-13