Dravco Corporation

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Process and apparatus for desolventizing and drying solvent wet mat...
- Patent number 4,332,092
- Issue date Jun 1, 1982
- Dravco Corporation
- Roger J. Hansotte
- F26 - DRYING
Information Patent Grant
Method for denitrification of treated sewage
- Patent number 4,159,945
- Issue date Jul 3, 1979
- Dravco Corporation
- Elton S. Savage
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE