Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4788113 | Sheet material and separator envelopes manufactured therefrom for the electrode plates of batteries | Eberhard Nann | 1988-11-29 |
| 4781997 | Storage battery that is protected against the discharge of acid | Eberhard Nann, Ulrich Romling | 1988-11-01 |