JL

John Langkau

EC Eveready Battery Company: 1 patents #284 of 520Top 55%
📍 Rocky River, OH: #160 of 263 inventorsTop 65%
🗺 Ohio: #42,657 of 73,341 inventorsTop 60%
Overall (All Time): #3,934,745 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4855195 Electrochemical cell with internal circuit interrupter Philip Georgopoulos 1989-08-08