4. Hydraulic and earth engineering
  5. Earth treatment or control
  6. Rock or earth bolt or anchor

Raymond L. Wright

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Combined resin-mechanical mine roof support anchor

Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent

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Cylinder liner sleeve puller

Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent

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Mechanical expansion anchor shell

Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent

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Mine roof expansion anchor

Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent

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Mine roof expansion anchor

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent

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Profile ID: LFUS-PAI-P-506588

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