Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4735874 | Process for producing a gas-tight, sealed alkaline battery | Wolfgang Knabenbauer, Dietrich Sprengel, Rudolf Tepel | 1988-04-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4735874 | Process for producing a gas-tight, sealed alkaline battery | Wolfgang Knabenbauer, Dietrich Sprengel, Rudolf Tepel | 1988-04-05 |