HB

Howard W. Bertram

📍 Ganges, CA: #4 of 11 inventorsTop 40%
Overall (All Time): #3,942,001 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4881443 Music teaching apparatus — 1989-11-21