Ralph O. Wigger

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Yonkers, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Removing chlorine-containing insulation with a fluidized medium con...
- Patent number 4,040,865
- Issue date Aug 9, 1977
- Cerro Corporation
- Frank W. Eggers
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Insulation removal apparatus
- Patent number 3,932,118
- Issue date Jan 13, 1976
- Cerro Corporation
- Frank W. Eggers
- F27 - FURNACES KILNS OVENS RETORTS