申请人 |
WESTERN ATLAS U.K. LTD., AYLESBURY, BUCKINGHAMSHIRE, GB |
发明人 |
BARTLETT, CHRISTOPHER DAVID, STEETON, KEIGHLEY, WEST YORKSHIRE, GB;LAYCOCK, MICHAEL, CROSS HILLS, KEIGHLEY, WEST YORKSHIRE, GB;LEADBEATER, PETER BRIAN, WOBURN SANDS, MILTON KEYNES, BUCKINGHAMSHIRE, GB |