Siegfried Korn

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Oberkochen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Multifocal spectacle lens having a large near-vision part
- Patent number 4,690,524
- Issue date Sep 1, 1987
- Carl-Zeiss-Stiftung
- Erwin J. Daniels
- G02 - OPTICS
Information Patent Grant
Multifocal spectacle lens
- Patent number 4,247,179
- Issue date Jan 27, 1981
- Carl Zeiss-Stiftung
- Erwin J. Daniels
- G02 - OPTICS