000 00524nab a2200157 4500
005 20260520000802.0
008 260224s2009 xxu
245 0 0 _aElevated RPM with increased ROP
_bApplication-specific roller cone bits equipped to withstand higher energy inputs can deliver better performance in critical applications
260 _a
_b
_cfeb. 2009
270 _a2009-02-17 ; 2009-02-17
300 _a1 p. ; 54
581 _a2
773 0 _tE & P
_g82
942 _cARTICULO
999 _c169027
_d169027