Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6446292 | Mobile bridge and method of making same | Friedrich Graf | 2002-09-10 |
| 6374445 | Tension rod for use as a chord for bridges | Friedrich Graf | 2002-04-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6446292 | Mobile bridge and method of making same | Friedrich Graf | 2002-09-10 |
| 6374445 | Tension rod for use as a chord for bridges | Friedrich Graf | 2002-04-23 |