4. G - Physics
  5. 02
  6. C

Gerhard Kelch

G - Physics – 02 – C

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Inventor

Country: Germany

Method for production of a lens and lens produced thus

G - Physics – 02 – C
Patent

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Multifocal spectacle lens

G - Physics – 02 – C
Patent

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Multifocal surface for a multifocal spectacle lens

G - Physics – 02 – C
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Profile ID: LFCA-PAI-P-1730296

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