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DE19962298A1
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Press-in device for pipes and drill rods
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Method and device for handling pipes in drilling rigs
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Welded connection and method for welding workpieces
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Handling of tube sections in a rig for subsoil drilling
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Linkage for conveyor and method for assembling linkage
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Device for controlling a cable-driven hoist
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Method for controlling a rope-driven hoist
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Device for handling and setting drill pipes in a derrick
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DEVICE FOR REMOTE CONTROL AND MONITORING OF HOLE HOLE LOCKING SYSTEMS
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Improvements in or relating to Shaft Boring Apparatus.
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Improvements in Apparatus for Deep Boring
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