Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868964 | Apparatus for joining pipe | — | 1989-09-26 |
| 4805430 | Tool for cold forging tubular members | Arthur H. T. Chin | 1989-02-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868964 | Apparatus for joining pipe | — | 1989-09-26 |
| 4805430 | Tool for cold forging tubular members | Arthur H. T. Chin | 1989-02-21 |