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2399427
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Patent number 2,399,427
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Issue date Apr 30, 1946
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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1421186
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Patent number 1,421,186
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Issue date Jun 27, 1922
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...