Chris Mitchell

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Sewickley, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Air diffuser valve
- Patent number 6,016,839
- Issue date Jan 25, 2000
- Red Valve Co., Inc.
- Spiros G. Raftis
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE