Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D630489 | Electronic lock | Torsten Gratzki, Jens Deerberg, Helmut Guth | 2011-01-11 |
| 7748512 | Lock for coin deposit container | — | 2010-07-06 |
| 6260392 | Lock, especially for a lock installation | — | 2001-07-17 |
| 4817404 | Reversible bolt lock, specifically with a locking function released by coin drop | Armin Eisermann | 1989-04-04 |
| 4572348 | Lock, particularly a coin-deposit lock | Armin Eisermann, Heinz ten Eicken, Kurt Obenluneschloss | 1986-02-25 |
| 4433772 | Lock with locking function adapted to be actuated after the insertion of a coin | Armin Eisermann, Heinz T. Eicken | 1984-02-28 |