US3693445A
(en )
1972-09-26
Liquid level measurement device
GB1411223A
(en )
1975-10-22
Apparatus and method for measuring the level of the contents of a container
US3406776A
(en )
1968-10-22
Acoustic method and apparatus for examining formations adjacent the walls of boreholes
US3744301A
(en )
1973-07-10
Ultrasonic void fraction detector
US3076519A
(en )
1963-02-05
Ultrasonic surveyor's distance measuring instrument
US3423992A
(en )
1969-01-28
Ultrasonic apparatus for measuring thickness or distances
US4027281A
(en )
1977-05-31
Digital recording of sonic log wavetrains
SU418737A1
(enrdf_load_stackoverflow )
1974-03-05
GB1315321A
(en )
1973-05-02
Apparatus and method for well investigation
US3174128A
(en )
1965-03-16
Combined depth monitoring and seismic surveying apparatus
JPS5639414A
(en )
1981-04-15
Ink detector for ink jet recorder
US2534006A
(en )
1950-12-12
Supersonic inspection device
US3835953A
(en )
1974-09-17
Acoustic caliper logging
GB1489013A
(en )
1977-10-19
Propagation delay meter
US2683821A
(en )
1954-07-13
Unwanted reflection absorbing shear wave transducer
US4031503A
(en )
1977-06-21
Anti-corrosion ultrasonic transducer
US3346839A
(en )
1967-10-10
Echo-sounding apparatus for examining strata below the sea-bed with variable gain means responsive to sea-bed echoes
SU537253A1
(ru )
1976-11-30
Ультразвуковой измеритель уровн жидкости
SU1786458A1
(ru )
1993-01-07
Акустический профилемер подземных полостей, заполненных жидкостью
US1649378A
(en )
1927-11-15
Means for sounding or measuring distance in water
US3314498A
(en )
1967-04-18
Integrated indication of seismic well logging signals
SU1029007A1
(ru )
1983-07-15
Ультразвуковой безэталонный толщиномер
GB1131075A
(en )
1968-10-23
Ultrasonic inspection apparatus and method
GB1308407A
(en )
1973-02-28
Self electrolyte-level determining accumulator
SU376737A1
(ru )
1973-04-05
УСТРОЙСТВО дл ГЕОФИЗИЧЕСКИХ ИССЛЕДОВАНИЙ