Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4586195 | Microphone range finder | Martin DeGeorge, John Welch | 1986-04-29 |
| 4532508 | Personal authentication system | — | 1985-07-30 |
| 4449189 | Personal access control system using speech and face recognition | Wolfgang H. Feix | 1984-05-15 |
| 4428670 | Fingerprint sensing device for deriving an electric signal | Edward J. Devinney, Jr., Ming-Yee Chiu | 1984-01-31 |
| 4427881 | Sensor device for measuring a physical parameter | — | 1984-01-24 |
| 4394773 | Fingerprint sensor | — | 1983-07-19 |
| 4385831 | Device for investigation of a finger relief | — | 1983-05-31 |
| 4368979 | Automobile identification system | — | 1983-01-18 |
| 4358677 | Transducer for fingerprints and apparatus for analyzing fingerprints | Wolfgang H. Feix | 1982-11-09 |
| 4356396 | Fiber optical measuring device with compensating properties | Ekkehard Klement | 1982-10-26 |
| 4355238 | Liquid level indicator | — | 1982-10-19 |
| 4340300 | Input sensor unit for a fingerprint identification system | — | 1982-07-20 |
| 4336998 | Fingerprint transducer and reading apparatus | — | 1982-06-29 |
| 4269473 | Identification card with a hologram and a process for the production thereof | Detlev Flothmann, Angelika Staimer | 1981-05-26 |