0000808362-05-000073 4 1 20050303 20050303 20050303 BAKER HUGHES INC 0000808362 3533 760207995 DE 1231 3900 ESSEX LANE HOUSTON TX 77027 7134398600 3900 ESSEX LAND HOUSTON TX 77210 KEIFER ALAN J 0001158645 4 34 001-09397 05659178 2001 RANKIN ROAD HOUSTON TX 77073 4 1 doc4.xml PRIMARY DOCUMENT