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Sanitary waste collector
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Patent number 4,037,867
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Issue date Jul 26, 1977
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Joseph D. Fano
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Sanitary waste receiver
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Patent number 4,003,595
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Issue date Jan 18, 1977
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Joseph D. Fano
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES