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Spike hole plugging material
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Patent number 4,152,185
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Issue date May 1, 1979
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Racine Railroad Products, Inc.
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Dennis J. Tessenske
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Spike hole plugging material
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Patent number 4,070,201
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Issue date Jan 24, 1978
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Racine Railroad Products, Inc.
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Dennis J. Tessenske
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES