HF

Herman E. Frentzel

📍 Poway, CA: #2 of 55 inventorsTop 4%
🗺 California: #1,124 of 13,957 inventorsTop 9%
Overall (1994): #32,452 of 165,921Top 20%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5363877 Suction regulating valve Dieter J. Rief 1994-11-15
5293659 Automatic swimming pool cleaner Dieter J. Rief, Jerauld George Wright, Paul Sebor 1994-03-15