4. Ammunition and explosives
  5. Blasting
  6. Contained blasting charge

Mark C. Duhon

Inventor

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Charge holder apparatus

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Concave-shaped charge
Reexamination Certificate

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Charge holder apparatus

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Concave-shaped charge
Reexamination Certificate

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Connector assembly and method of use

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector
Reexamination Certificate

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Expandable elements

Wells – With heating – refrigerating or heat insulating means
Reexamination Certificate

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Loading tube for shaped charges

Ammunition and explosives – Blasting – Contained blasting charge
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2266514

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