Inventor · disambiguated record
Rolf Magel
Also filed as: MAGEL ROLF · WIESSNER WILLI
8 granted patents·27 citations·filing 1976–1997
82Inventor score
Top patents by PatentIndex Score
8 records- 0171US4054887AExposure control device for photographic camerasLEITZ ERNST GMBH·Filed 1976·Granted Oct 18, 1977·9 cites·7 claims
- 0253US4172651ASingle lens mirror reflex camera with automated aperture and timing controlLEITZ ERNST GMBH·Filed 1978·Granted Oct 30, 1979·4 cites·14 claims
- 0344US4284334ACircuit arrangement for the compensation of the temperature coefficient of semiconductor junctionsLEITZ ERNST GMBH·Filed 1979·Granted Aug 18, 1981·6 cites·6 claims
- 0434US4310229AMethod and apparatus for automatic exposure control on a photographic cameraLEITZ ERNST GMBH·Filed 1979·Granted Jan 12, 1982·1 cites·13 claims
- 0531US5907727ADevice for exposure meteringLEICA CAMERA AG·Filed 1997·Granted May 25, 1999·0 cites·22 claims
- 0631US4694155ACircuit arrangement to ascertain and indicate that a luminous density limit condition is exceededLEITZ ERNST GMBH·Filed 1985·Granted Sep 15, 1987·1 cites·6 claims
- 0731US4647175ACircuit arrangement for an electronic exposure meterLEITZ ERNST GMBH·Filed 1985·Granted Mar 3, 1987·1 cites·2 claims
- 0830US4737668ACircuit arrangement for reducing the settling time of logarithmic amplifiersLEITZ ERNST GMBH·Filed 1986·Granted Apr 12, 1988·5 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →