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Mudguard gritter
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Patent number 6,926,314
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Issue date Aug 9, 2005
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Rock Bergeron
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B60 - VEHICLES IN GENERAL
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3093399
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Patent number 3,093,399
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Issue date Jun 11, 1963
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B61 - RAILWAYS
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2720407
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Patent number 2,720,407
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Issue date Oct 11, 1955
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B60 - VEHICLES IN GENERAL
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2418587
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Patent number 2,418,587
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Issue date Apr 8, 1947
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B61 - RAILWAYS
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2386006
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Patent number 2,386,006
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Issue date Oct 2, 1945
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B61 - RAILWAYS
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2352252
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Patent number 2,352,252
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Issue date Jun 27, 1944
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B61 - RAILWAYS
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2293110
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Patent number 2,293,110
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Issue date Aug 18, 1942
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B61 - RAILWAYS