Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4367681 | Dynamic loading correcting device | John K. Stewart, Helmuth von Beckmann | 1983-01-11 |
| 4201602 | Rail hardening machine and method | — | 1980-05-06 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4367681 | Dynamic loading correcting device | John K. Stewart, Helmuth von Beckmann | 1983-01-11 |
| 4201602 | Rail hardening machine and method | — | 1980-05-06 |