Devrient; Ludwig
Patent Applications and Registrations
Patent applications and USPTO patent grants for Devrient; Ludwig.The latest application filed is for "method of producing an identification card".
- Devrient; Ludwig - Munich DE
- Devrient; Ludwig - Vaterstetten DE
- Devrient; Ludwig - Munich 81 DE
| Patent | Date |
|---|---|
| Method of producing an identification card Grant 4,672,891 - Maurer , et al. June 16, 1 | 1987-06-16 |
| Check paper that is protected against forgery and tampering Grant 4,629,630 - Devrient December 16, 1 | 1986-12-16 |
| Identification card with duplicate data Grant 4,597,592 - Maurer , et al. July 1, 1 | 1986-07-01 |
| Identification card Grant 4,544,181 - Maurer , et al. October 1, 1 | 1985-10-01 |
| Guilloche identification card Grant 4,504,083 - Devrient , et al. March 12, 1 | 1985-03-12 |
| Check paper that is protected against forgery and tampering Grant 4,496,961 - Devrient January 29, 1 | 1985-01-29 |
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