E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/34
E21B 19/24 (2006.01)
Patent
CA 712028
Genberg Bengt R.
Hjalsten John A.
Lindgren Carl O.
Atlas Copco Aktiebolag
Na
Sandvikens Jernverks Aktiebolag
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