Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842306 | Pipe coupling | Manfred Kruger | 1989-06-27 |
| 4819974 | Pipe coupling | — | 1989-04-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842306 | Pipe coupling | Manfred Kruger | 1989-06-27 |
| 4819974 | Pipe coupling | — | 1989-04-11 |