Janos Szappanos

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Newfane, VT, US

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Patents Grantslast 30 patents

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Method and optical means for improving or modifying color vision an...
- Patent number 5,774,202
- Issue date Jun 30, 1998
- Coloryte Hungary Optikai Kutato, Fejleszto es Gyarto Reszvenytarsasag
- Gyorgy Abraham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE