FR1262823A
(en )
1961-06-05
Method and apparatus for seismic prospecting
FR1212244A
(en )
1960-03-22
Apparatus for reproducing documents by electrolysis
BE580218A
(en )
1959-10-16
Device for the exploration of geological formations
FR1167561A
(en )
1958-11-26
Apparatus and method using the spin-echo technique
BE554455A
(en )
1960-01-29
APPARATUS FOR THE REPRODUCTION OF SEISMOGRAMS USED IN GEOPHYSICAL PROSPECTING.
FR1110921A
(en )
1956-02-20
Acoustic exploration device for geological formations
FR1126436A
(en )
1956-11-22
Drilling apparatus in particular for geophysical prospecting
FR1109219A
(en )
1956-01-24
Apparatus for seismic prospecting
FR1164321A
(en )
1958-10-08
Simplified device for prospecting for radioactive minerals
CH341145A
(en )
1959-09-30
Device for the separation of isotopes
FR1258833A
(en )
1961-04-21
Device for the exploration of geological layers
FR1192125A
(en )
1959-10-23
Methods and apparatus for borehole exploration
FR1213419A
(en )
1960-03-31
Film transport mechanism, in particular for apparatus for reproducing sketches of seismograms of the type used in geophysical prospecting
FR1145496A
(en )
1957-10-25
Simplified portable device for prospecting for radioactive minerals
FI32234A
(en )
1961-12-11
Geophysical exploration method
FI34045A
(en )
1964-03-10
Geophysical prospecting method and device
FR1128213A
(en )
1957-01-03
Electromagnetic prospecting device
FR1109217A
(en )
1956-01-24
Seismograph
AU211146B2
(en )
1956-04-26
Apparatus for geophysical prospecting
BE578243A
(en )
1959-10-29
Apparatus for the day-to-day development of film-packs
AT198043B
(en )
1958-06-10
Device for the photoelectric reading of character representations
FR1234969A
(en )
1960-07-01
Device for the exploration of geological formations
AU200721B2
(en )
1955-01-13
Method and device for seismic prospecting
AU218965B2
(en )
1957-09-05
Improvements in or relating to apparatus for geophysical exploration
AU210928B2
(en )
1956-10-04
Geophysical survey apparatus