FT

Francis H. Townsend

📍 Alton, IL: #37 of 84 inventorsTop 45%
🗺 Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #4,053,369 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4389580 Flexible tape electroacoustic transducer using an electret Andre P. J. Bendyshe Walton, John N. Ribet 1983-06-21