Karoly Szepesi

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Budapest, HU

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Patents Grantslast 30 patents

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Process for the extraction of alumina from minerals, rocks and indu...
- Patent number 4,048,285
- Issue date Sep 13, 1977
- Chemokomplex Vegyipari Gep-es Berendezes Export-Import Vallalat
- Karoly Szepesi
- C05 - FERTILISERS MANUFACTURE THEREOF