Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6571334 | Apparatus and method for authenticating the dispatch and contents of documents | Michael Feldbau | 2003-05-27 |
| 6182219 | Apparatus and method for authenticating the dispatch and contents of documents | Michael Feldbau | 2001-01-30 |