Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4735874 | Process for producing a gas-tight, sealed alkaline battery | Karl Glotzel, Wolfgang Knabenbauer, Dietrich Sprengel | 1988-04-05 |
| 4643959 | Process for producing a gas-tight, sealed alkaline battery | Karl Glotzl, Wolfgang Knabenbauer, Dietrich Sprengel | 1987-02-17 |