ROCKMAX Produktions-
und Handelsgesellschaft mbH
27, Stollenstrasse
45966 Gladbeck
(DE)
Patentanwälte Spalthoff und Lelgemann
Postfach 340 220
45074 Essen
(DE)
Англ.Drilling machines and parts of drilling machines, namely drill heads, roller bits, stepped cutters, cutter heads, hydraulic cutters; drill pipes, shanks, connecting sleeves, stroke pipes, superposing drill pipes, taper rods, monobloc drills, annular borer equipment, ram points, casing shoes; all included in this class.