Wolfgang Dorau

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Berlin, DE

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Patents Grantslast 30 patents

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Method and apparatus for biologically purifying sewage which is org...
- Patent number 5,362,395
- Issue date Nov 8, 1994
- Wehrle-Werk AG
- Wolfgang Dorau
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE