Douglas J. Spisak

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of devolatilizing earth solids and mobile truck for carrying...
- Patent number 5,152,233
- Issue date Oct 6, 1992
- Heyl & Patterson, Inc.
- Douglas J. Spisak
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES