4. Hydraulic and earth engineering
  5. Earth treatment or control
  6. Shoring, bracing, or cave-in prevention

Thomas J. Stapleton

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Seal apparatus between a shaft and a non-linear inner surface of

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Trench shoring apparatus

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent

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Profile ID: LFUS-PAI-P-1408404

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