Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5071335 | Apparatus for two-layered injection moulding | Gerd Riedel, Gottfried Lutz, Franz Gumplinger | 1991-12-10 |
| 5014150 | Magnetic tape cassette having outer appearance modified by surface printing | Gottfried Lutz, Albert Pertzsch, Helmut Schultz | 1991-05-07 |
| 4961124 | Magnetic tape cassette having a sliding closure member that locks the winding hubs | Hubert Brunner | 1990-10-02 |
| 4916565 | Magnetic tape cassette having improved closure means | Hubert Brunner, August Liepold, Albert Pertzsch, Ludwig Zeroni | 1990-04-10 |