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DE2159351A1
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DRILL EQUIPMENT WITH AT LEAST ONE ROLLER EQUIPPED WITH AN BALANCE VIBRATOR
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DE2020394A1
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Double lip seal
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DE1810780A1
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Device for removing rock
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DE1758109A1
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Machine for driving routes or tunnels
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DE1298481B
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Rock wedge device for routes and shafts
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DE1621652A1
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Method and device for the continuous annealing and pickling of metal, in particular steel wire
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DE1483866A1
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Device for widening boreholes or removing rock, for example when making a slot
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DE1223779B
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Conical roller chisels, especially for horizontal bores
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DE1219425B
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Extension bits
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DE1226963B
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Extension roller drill
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DE1224230B
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Cutting roller for extension roller chisels and other devices for removing rock
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ES313634A1
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A roller chisel device for wrapping, provided with cutting rollers. (Machine-translation by Google Translate, not legally binding)
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ES313633A1
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A machine for rock excavation. (Machine-translation by Google Translate, not legally binding)
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DE1232895B
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Chisel roller for removing rock
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DE1227407B
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Device for widening boreholes or for driving a stretch, adit or tunnel or for removing rock, for example when making a slot
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DE1184300B
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Extension roller drilling tool
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DE1218973B
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Cutting roller, especially for expansion roller chisels
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DE1233806B
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Method and device for driving a route or a tunnel
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DE1433195A1
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Roller drilling tool
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DE1152076B
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Procedure for expanding pilot holes
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