Fritz Keiner

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Ehringshausen, DE

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Patents Grantslast 30 patents

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