JR

James M. Ruffing

IT International Telephone And Telegraph: 2 patents #96 of 507Top 20%
📍 Delaware, OH: #104 of 260 inventorsTop 40%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,363,566 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4402079 Delay correction circuit Frank Fellinger 1983-08-30
4230911 Carrier terminal unit Frank Fellinger 1980-10-28