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Derrick tilting system

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Patent

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Device for displacing a load

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Reexamination Certificate

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Device for driving piles

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Reexamination Certificate

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Device for the continuous adjustment of unbalance of...

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Reexamination Certificate

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Drill rig-casing driver assembly

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Patent

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Drill tool

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Reexamination Certificate

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Drilling apparatus

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Patent

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Drilling boom

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Patent

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Drilling boom

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Patent

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Drilling machine positioning arrangement

Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Patent

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