Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5080510 | Matrix print head with an electromagnetic coil support | Johann Stempfle | 1992-01-14 |
| 5074687 | Armature of an electromagnet-coil/armature system for dot matrix print heads, and method of manufacturing same | Johann Stempfle, Matthias Ullrich | 1991-12-24 |
| 5073051 | Matrix pin print head having a shield to counter magnetic fields | Matthias Ullrich | 1991-12-17 |
| 5039239 | Matrix pin-print head of the hinged-clapper-armature construction | Johann Stempfle | 1991-08-13 |
| 5032031 | Drive circuit for a matrix printer | Manfred Gruner, Johann Stempfle | 1991-07-16 |
| 5009529 | Matrix print head of hinged-clapper-armature construction | Clemens Kaufmann, Herbert Kitzberger, Kurt Rohrer | 1991-04-23 |
| 5000593 | Matrix pin print head of the hinged-clapper-armature construction | Johann Stempfle | 1991-03-19 |
| 4822187 | Preventing armature rebounding in matrix print heads | — | 1989-04-18 |
| 4695174 | Magnetic circuit for matrix print head | Harald Niebel, Hubert Ott | 1987-09-22 |
| 4674179 | Making an armature assembly for matrix print heads | Harald Niebel, Hubert Ott, Horst Heisele, Herbert Kitzberger, Wolfgang Seybold | 1987-06-23 |
| 4552471 | Print head with permanent magnetic bias | Harald Niebel | 1985-11-12 |
| 4541745 | Print head construction | — | 1985-09-17 |
| 4485425 | Drive circuit for printer, particularly, matrix printer of the needle or hammer variety | Manfred Gruner | 1984-11-27 |