Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6175695 | Manually operable flashlight unit | Klaus Schaefer | 2001-01-16 |
| 5907727 | Device for exposure metering | Robert Denk, Gerhard Kranz, Rolf Magel | 1999-05-25 |
| 4737668 | Circuit arrangement for reducing the settling time of logarithmic amplifiers | Rolf Magel, Helmut Bill | 1988-04-12 |
| 4694155 | Circuit arrangement to ascertain and indicate that a luminous density limit condition is exceeded | Rolf Magel | 1987-09-15 |
| 4647175 | Circuit arrangement for an electronic exposure meter | Rolf Magel | 1987-03-03 |
| 4639134 | Process and circuit arrangement for amplifying an input current | — | 1987-01-27 |
| 4541700 | Method and devices for transferring electrical signal information between a photographic lens and camera | Herbert Machmerth, Walter Mandler | 1985-09-17 |
| 4218613 | Amplifier for electric signals | — | 1980-08-19 |
| 4195909 | Scanning grating for a focus detector | Werner Holle | 1980-04-01 |