Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4642707 | Magnetic tape video recorder with a one head drum | Erich Geiger | 1987-02-10 |
| 4628345 | Circuit for analog digital conversion of a color television signal employing variable signal amplification | Erich Geiger, Bernhard Otto | 1986-12-09 |