Inventor
EPPLIN DAVID M
US2 patents
Patents
2 patentsUS7234540B2Jun 26, 2007
Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis
BAKER HUGHES INC22 citations87
US7813878B2Oct 12, 2010
Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis
BAKER HUGHES INC10 citations79