Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805517 | Gas return railway car hydraulic cushioning unit and method of converting a spring return unit | Arthur Conley, Owen Darcey | 1989-02-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805517 | Gas return railway car hydraulic cushioning unit and method of converting a spring return unit | Arthur Conley, Owen Darcey | 1989-02-21 |