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Articulated coupling

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Patent

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Down-hole motor universal joint

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Patent

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Downhole motor universal joint assembly

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Reexamination Certificate

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Drive line for down hole mud motor

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Reexamination Certificate

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Flexible drill pipe

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Reexamination Certificate

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Sealed flexible motor coupling

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Reexamination Certificate

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Shaft alignment

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Patent

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Stabilizer mechanism for use in drilling deviated well bores

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Patent

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