Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844510 | Tubular connector | David H. Theiss | 1989-07-04 |
| 4823871 | Hanger and seal assembly | David H. Theiss | 1989-04-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844510 | Tubular connector | David H. Theiss | 1989-07-04 |
| 4823871 | Hanger and seal assembly | David H. Theiss | 1989-04-25 |