Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5350928 | Apparatus and method for detecting perforations | Peter Hatchell, Ronald L. Lotto | 1994-09-27 |
| 5292299 | Maintaining perforation phasing | Peter Hatchell, Emiel Lambrecht | 1994-03-08 |