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DE4037261A1
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TARGET DRILL ROD WITH A PIPE SHAFT BEARING
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DE4037259A1
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TARGET ROD WITH ITS OWN ELECTRICAL POWER SUPPLY BY A BUILT-IN GENERATOR
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DE4037262A1
|
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Target boring bar
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EP0324870A1
|
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Self-steering drill string pipe for rotating drill strings of rock drilling machines
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DE3541283A1
|
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Mechanical seal
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DE3531237C1
|
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Sealed connection
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DE3531226A1
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DEVICE, IN PARTICULAR FOR UNDERGROUND APPLICATION FOR REMOTE TRANSMISSION OF INFORMATION FROM A DRILL HOLE
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DE3201654A1
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PROPELLER RUDDER FOR SHIPS, ESPECIALLY FOR SAILING YACHTS
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DE2552308A1
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Air-assisted gyroscopic sorter esp. for mining - has drive unit allowing easy infinite adjustment of fan wheel
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