Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5231882 | Testing device for performing four-point fatigue strength tests under alternating bending stresses | Ludwig Bertele, Karl-Heinz Wichmann | 1993-08-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5231882 | Testing device for performing four-point fatigue strength tests under alternating bending stresses | Ludwig Bertele, Karl-Heinz Wichmann | 1993-08-03 |