Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841128 | Circuit unit | Helmut Grottrup | 1989-06-20 |
| 4748452 | Method of producing an identification card | — | 1988-05-31 |
| 4735670 | Method of producing an identification card | Hans J. Holbein | 1988-04-05 |
| 4732410 | Identification card and a method of producing same | Hans J. Holbein | 1988-03-22 |
| 4672891 | Method of producing an identification card | Ludwig Devrient | 1987-06-16 |
| 4629215 | Identification card and a method of producing same | Hans J. Holbein | 1986-12-16 |
| 4597592 | Identification card with duplicate data | Ludwig Devrient | 1986-07-01 |
| 4597593 | Identification card and a method of producing same | — | 1986-07-01 |
| 4596409 | Identification card and method of producing it | Hans J. Holbein | 1986-06-24 |
| 4579754 | Identification card having laser inscribed indicia and a method of producing it | Joseph Lass, Hans J. Holbein | 1986-04-01 |
| 4544181 | Identification card | Wolfgang Gauch, Ludwig Devrient | 1985-10-01 |
| 4523777 | Identification card and a method of producing same | Hans J. Holbein | 1985-06-18 |
| 4507346 | Multilayer identification card and a method of producing it | Hans J. Holbein, Joseph Lass | 1985-03-26 |
| 4467209 | Method of producing identification cards and a device for carrying out same | Erwin Lob, Peter Schweiger | 1984-08-21 |