John R. Henkel

📍 Davenport, IA: #132 of 349 inventorsTop 40%

🗺 Iowa: #6,094 of 15,303 inventorsTop 40%

Overall (All Time): #2,313,205 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5173652	Battery chargers for secondary cells of batteries, which control the thermo response of the charge acceptor	—	1992-12-22
4670700	Battery chargers for secondary cells, and or batteries	—	1987-06-02