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DE635677C
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Locking device of a hydraulic impact cylinder for deep drilling
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DE631395C
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Driver for hydraulic deep drilling cylinder
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DE622223C
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Impact drill bit for deep drilling
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DE631396C
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Hydraulic motor for deep drilling in the borehole
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DE631394C
|
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Hydraulic deep drill
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DE631397C
|
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Hydraulic impact cylinder for deep drilling
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DE568314C
|
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Device for distilling or splitting hydrocarbon oils
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DE512427C
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Injection nozzle for hydrocarbons in molten salts or molten metals for the purpose of distillation or splitting
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DE521216C
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Device for distilling or splitting hydrocarbon oils
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DE498613C
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Method and device for distilling or cracking hydrocarbon oils
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CA292203A
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Distillation method
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DE635178C
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Hydraulic motor for deep drilling in the borehole
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DE499746C
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Device for distilling or splitting hydrocarbon oils
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DE623017C
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Impact drill bit for deep drilling
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