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Rock cutting machine having slot cutting and slot engaging guide means
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DE921977C
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Method and device for cutting stones by impact
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Schraemmaschine
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Concrete mixer
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Combined broaching tool
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Tool for drilling rocks and the like and drilling device comprising such tools
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CA480128A
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Combination boring tool
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Means for working materials from mines, quarries, etc.
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Boring apparatus for mines, quarries, etc.
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Means for breaking and polishing stone and the like
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Tool for hollowing out stone and means of application
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