4. Tool driving or impacting
  5. Impacting devices
  6. Impact transmitting anvil

William N. Patterson

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Buoyancy dissipater and method to deter an errant vessel

Ammunition and explosives – Marine-type projectile
Reexamination Certificate

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Buoyancy dissipater and method to deter an errant vessel

Ammunition and explosives – Marine-type projectile
Reexamination Certificate

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Concentric drill rod assemblies for percussion rock drills

Tool driving or impacting – Work cleansing – Cleansing fluid passage in impact transmitting anvil
Patent

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Drill stem guide and wrench apparatus

Wells – Above ground apparatus – With means facilitating connecting or disconnecting...
Reexamination Certificate

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Hydraulic in-the-hole percussion rock drill

Boring or penetrating the earth – With below-ground tool drive prime mover – Below-ground storage of motivating energy
Reexamination Certificate

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Profile ID: LFUS-PAI-P-182300

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