WH

William B. Hilfiker

HC Hilfiker Pipe Co.: 1 patents #1 of 2Top 50%
📍 Eureka, CA: #1 of 5 inventorsTop 20%
🗺 California: #4,598 of 17,285 inventorsTop 30%
Overall (1997): #60,002 of 185,788Top 35%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5647695 Soil filled wall Harold K. Hilfiker 1997-07-15