Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877341 | Device for intermittent application of particles of a powdered developer to the recording surface of a magnetographic printer | Jacques Estavoyer | 1989-10-31 |
| 4831386 | Powdered substance for lubricating the recording carrier or a magnetic printer | Daniel Kinet, Jacques Estavoyer | 1989-05-16 |
| 4811476 | Method of manufacturing a magnetic transducer including a plurality of heads | Philippe Raulin, Jean-Pierre Messer, Jacques Estavoyer | 1989-03-14 |