Ivan P. Dombalov

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Sofia, BG

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Patents Grantslast 30 patents

Information Patent Grant
Method of obtaining granulated and defluorated phosphogypsum
- Patent number 4,162,170
- Issue date Jul 24, 1979
- Vish Chimiko-Technologicheski Institute
- Ivan N. Grancharov
- C01 - INORGANIC CHEMISTRY