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Sand reclaimer
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Patent number 5,613,902
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Issue date Mar 25, 1997
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Didion Manufacturing Company
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Michael S. Didion
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B22 - CASTING POWDER METALLURGY
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Rotary dryer drum
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Patent number 5,581,902
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Issue date Dec 10, 1996
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Didion Manufacturing Company
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Charles J. Didion
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F26 - DRYING
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Sand reclaiming drum
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Patent number 5,016,827
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Issue date May 21, 1991
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Didion Manufacturing Company
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Charles J. Didion
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B22 - CASTING POWDER METALLURGY
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Dual sand reclaimer
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Patent number 4,674,691
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Issue date Jun 23, 1987
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Didion Manufacturing Company
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Charles J. Didion
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B22 - CASTING POWDER METALLURGY
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Liner segments retention means
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Patent number 4,502,808
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Issue date Mar 5, 1985
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Didion Manufacturing Company
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Charles J. Didion
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B22 - CASTING POWDER METALLURGY
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