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2897714
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Patent number 2,897,714
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Issue date Aug 4, 1959
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F42 - AMMUNITION BLASTING
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2364415
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Patent number 2,364,415
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Issue date Dec 5, 1944
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F42 - AMMUNITION BLASTING
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2227845
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Patent number 2,227,845
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Issue date Jan 7, 1941
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F42 - AMMUNITION BLASTING
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1978146
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Patent number 1,978,146
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Issue date Oct 23, 1934
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F42 - AMMUNITION BLASTING
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1903504
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Patent number 1,903,504
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Issue date Apr 11, 1933
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F42 - AMMUNITION BLASTING