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EP0466702A1
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Coupling for drilling machine with dust extractor
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DE3911159A1
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Coupling for drill pipe with force transmission
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EP0314123A2
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Connector, especially for diamond core bit with tubular part and threaded connection
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DE3813472A1
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Coupling, in particular for diamond bit with shank pipe and pipe thread connection
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DE3736302A1
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Coupling, in particular for diamond drilling bit with stem pipe and pipe-thread connection
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EP0235581A1
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Coupling, especially for a diamond drill bit with a tube shaft and tube winding connection
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DE3603499A1
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Diamond bit with shank tube and threaded tube connection
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DE3533929A1
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Diamond bit with shank tube and threaded tube connection
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