HB

Hendrik D. van der Bruggen

📍 Zaandam, NL: #25 of 57 inventorsTop 45%
Overall (All Time): #4,076,231 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4351215 Device for the acoustic indication of the beats of a musical time — 1982-09-28