Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844418 | Short stud tensioning apparatus | — | 1989-07-04 |
| 4831703 | Apparatus and method for plugging a tube | John J. Wilhelm, Kenneth D. Kolberg, Gregory L. Calhoun | 1989-05-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844418 | Short stud tensioning apparatus | — | 1989-07-04 |
| 4831703 | Apparatus and method for plugging a tube | John J. Wilhelm, Kenneth D. Kolberg, Gregory L. Calhoun | 1989-05-23 |