Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7367592 | Marking substance and security markings for testing the authenticity of documents | Frank Puttkammer, Monika Puttkammer | 2008-05-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7367592 | Marking substance and security markings for testing the authenticity of documents | Frank Puttkammer, Monika Puttkammer | 2008-05-06 |