Willi Wiessner

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Wetzlar, DE

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Patents Grantslast 30 patents

Information Patent Grant
Photographic objective with a fastening device
- Patent number 4,572,612
- Issue date Feb 25, 1986
- Ernst Leitz Wetzlar GmbH
- Werner Schlapp
- G02 - OPTICS
Information Patent Grant
Selective coupling system for cameras
- Patent number 4,199,248
- Issue date Apr 22, 1980
- Ernst Leitz Wetzlar GmbH
- Werner Schlapp
- G02 - OPTICS
Information Patent Grant
Interchangeable lens for SLR-cameras having TTL light metering
- Patent number 4,181,419
- Issue date Jan 1, 1980
- Ernst Leitz Wetzlar GmbH
- Werner Schlapp
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic camera with through the lens exposure meter
- Patent number 4,180,312
- Issue date Dec 25, 1979
- Ernst Leitz Wetzlar GmbH
- Ewald Schmidt
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Single lens mirror reflex camera with automated aperture and timing...
- Patent number 4,172,651
- Issue date Oct 30, 1979
- Ernst Leitz Wetzlar GmbH
- Willi Wiessner
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY