AT....DE....FRGB....................................................................................*EPregister to ST.36 EBD process v 1.0 kbaumeister@epo.org (15 Jan 2013)0077336A119830427EP82901041.01982032619821029enenen1981000262619810424SE1983042719831719830427198317

E21B 17/ 042 A I

enAN EXTENSION COUPLING FOR ROCK DRILLING EQUIPMENTfrCOUPLAGE DE RALLONGE POUR UN EQUIPEMENT DE FORAGE DE ROCHEdeKUPPLUNGSVERLÄNGERUNG FÜR GESTEINSBOHRMASCHINENFagersta ABBox 501S-773 01 FagerstaSEGUSTAFSSON, Gösta ChristerDunderbostigen 5S-778 00 NorbergSEUusitalo, IsakCarminger, Uusitalo & Nyberg Patentbyra AB, P.O. Box 7274S-103 89 StockholmSEATDEFRGBSE198200009119820326enWO198200365319821028198226