KH

Keld T. Helmuth

📍 Novato, CA: #7 of 23 inventorsTop 35%
🗺 California: #2,144 of 10,592 inventorsTop 25%
Overall (1989): #88,763 of 140,708Top 65%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4864611 Telephone handset attachment for use in-the-ear hearing aids — 1989-09-05