Dmitry A. Topchiev

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Moscow, SU

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Patents Grantslast 30 patents

Information Patent Grant
Method for the purification of waste water containing silver
- Patent number 5,423,990
- Issue date Jun 13, 1995
- Agfa-Gevaert, N.V.
- Eddy Michiels
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE