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David M. Welsh

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Composite detonating cord

C - Chemistry – Metallurgy – 06 – C
Patent

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Delay blasting assembly

F - Mech Eng,Light,Heat,Weapons – 42 – C
Patent

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Delay electric blasting caps

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Patent

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Detonating device

F - Mech Eng,Light,Heat,Weapons – 42 – C
Patent

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Explosive tape

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Profile ID: LFCA-PAI-P-60868

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