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3288067
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Patent number 3,288,067
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Issue date Nov 29, 1966
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F42 - AMMUNITION BLASTING
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3221657
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Patent number 3,221,657
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Issue date Dec 7, 1965
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F42 - AMMUNITION BLASTING
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2831431
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Patent number 2,831,431
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Issue date Apr 22, 1958
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F42 - AMMUNITION BLASTING
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1318954
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Patent number 1,318,954
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Issue date Oct 14, 1919
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F42 - AMMUNITION BLASTING