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Variable orientation nozzles for earth boring drill bits, drill bits so

drill bit for drilling subterranean earth formations are described in which the nozzle assem 4787465 Hydraulic drilling apparatus and method 1988-11-29 Dickinson, III et al. 175/67

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Drill bit for directional drilling in cobble formations - Earth Tool,

A drill bit configured for use in horizontal directional boring includes a spoon-shaped bod Attorney, Agent or Firm: Meyers, Philip G. Parent Case Data: This application claims pr

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Drill bit with extension elements in hydraulic communications to adjust

5. The drill bit of claim 4 further comprising a hydraulic passage configured to enable the fluid communication among the elements in the plurality of elements. 6. The drill bit of clai

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Ground Hole Drilling Machines/hydraulic Earth Auger Drill Attachment

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Thickening Agent For Drilling 80a51 As Oil Drillin Supplier, Find Best

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BEIJING PRODEMO, a company for the manufacturing and exporting of PROSTAR Expansive Mortar, and Rock Drilling Tools and equipments for application in the marble and

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drill power tongs - Quality drill power tongs

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China Earth Drill Suppliers From China Earth Drill Companies Tradekey

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387 Earth Drill Ground Drill from 85 Suppliers - Global Sources

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US Patent # 4,553,613. Hydraulic lift inner barrel in a drill string coring

Stephen J. Assistant Examiner: Bui; Thuy M. Attorney, Agent or Firm: Beehler, Pavitt, Si hydraulically lifting an inner tube concentrically disposed within an outer tube in a drill stri

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