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Dead lever lug
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Patent number 6,330,862
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Issue date Dec 18, 2001
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Citicorp USA, Inc.
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Thomas R. Callahan
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B22 - CASTING POWDER METALLURGY
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Bolsters for railway trucks
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Patent number 6,089,166
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Issue date Jul 18, 2000
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AMSTED Industries Incorporated
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Thomas R. Callahan
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B22 - CASTING POWDER METALLURGY
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Sideframes for railway trucks
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Patent number 5,967,053
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Issue date Oct 19, 1999
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AMSTED Industries Incorporated
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Brian A. Toussaint
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B22 - CASTING POWDER METALLURGY
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