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Anti-splitting device
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Patent number 5,244,328
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Issue date Sep 14, 1993
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James A. Higgins
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3286649
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Patent number 3,286,649
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Issue date Nov 22, 1966
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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3069687
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Patent number 3,069,687
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Issue date Dec 25, 1962
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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2746324
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Patent number 2,746,324
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Issue date May 22, 1956
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2592077
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Patent number 2,592,077
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Issue date Apr 8, 1952
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2572323
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Patent number 2,572,323
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Issue date Oct 23, 1951
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1758822
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Patent number 1,758,822
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Issue date May 13, 1930
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES