E - Fixed Constructions – 21 – B
Inventor
E - Fixed Constructions
21
B
Inventor
Apparatus for drilling deep bore holes in bedrock
Device whereby a duct in a deep bore hole is supported and...
Electrically driven hammer machine
Grinding apparatus for disintegrating fibrous material
Apparatus for drilling deep bore holes in bedrock
Device whereby a duct in a deep bore hole is supported and...
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