Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4434427 | Atmosphere control for photographic pipeline inspection | Frederick Clarke, Donald E. Lorenzi | 1984-02-28 |
| 4372658 | Pipeline inspection apparatus | Donald T. O'Connor, Donald E. Lorenzi, John J. Flaherty | 1983-02-08 |
| 4363545 | Photographic pipeline inspection apparatus including an optical port wiper | Lawrence R. Lozynski, Donald E. Lorenzi | 1982-12-14 |
| 4249810 | Pipeline inspection apparatus | Donald T. O'Connor, Donald E. Lorenzi, John J. Flaherty | 1981-02-10 |