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Inventor
DE VANSSAY ROBERT
FR
2 patents
Patents
2 patents
US6003385A
Dec 21, 1999
Ultrasound apparatus for measuring the flow speed of a fluid
SCHLUMBERGER IND SA
54 citations
89
US6226598B1
May 1, 2001
Method of measuring the propagation time of a sound signal in a fluid by means of a zero-crossing of said sound signal
SCHLUMBERGER IND SA
26 citations
85