Rolf Seifert

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Dresden, DD

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Patents Grantslast 30 patents

Information Patent Grant
Focal-plane leaf shutter
- Patent number 4,426,146
- Issue date Jan 17, 1984
- VEB Pentacon Dresden Kamera-und Kinowerke
- Rolf Seifert
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY