Rolf Richter

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East Greenwich, RI, US

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Patents Grantslast 30 patents

Information Patent Grant
Aerator containing a ballast charge
- Patent number 4,118,447
- Issue date Oct 3, 1978
- Xodar Corporation
- Rolf Richter
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE