JB

John L. Butler

IA Image Acoustics: 2 patents #1 of 1Top 100%
📍 Marshfield, MA: #1 of 12 inventorsTop 9%
🗺 Massachusetts: #202 of 2,831 inventorsTop 8%
Overall (1989): #24,102 of 140,708Top 20%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4864548 Flextensional transducer 1989-09-05
4845688 Electro-mechanical transduction apparatus 1989-07-04