FR1230515A
(en )
1960-09-16
Device for detecting the displacement of a metal mass
FR1233995A
(en )
1960-10-13
Device for loading the extraction skips of a mining installation
BE581683A
(en )
1959-12-01
Device for loading the extraction skips of a mining exploration facility.
FR1210748A
(en )
1960-03-10
Device for loading a letter or other document into a bucket or other movable box
BE588205A
(en )
1960-07-01
Device for detecting the displacement of a metal mass
BE617149A
(en )
1962-08-31
Encaging device for mining installations
BE611590A
(en )
1962-06-15
Device for the support of a mine gallery
FR1230085A
(en )
1960-09-13
Support extension for mining
FR1308267A
(en )
1962-11-03
Device for the support of a mine gallery
FR1199170A
(en )
1959-12-11
Mobile support device for mining operations
FR1212989A
(en )
1960-03-28
Safety device for mine prop
FR1221024A
(en )
1960-05-30
Pumping device for wells
BE576627A
(en )
1959-07-01
Device for filling the joints of solid construction elements.
FR1258759A
(en )
1961-04-14
Progression device for mining
BE583584A
(en )
1960-02-01
Roller guidance device for extraction cages and skips of a mine shaft installation.
FR1232245A
(en )
1960-10-06
Coal mining machine
BE579285A
(en )
1959-12-02
Device for the exploration of numbers.
BE597516A
(en )
1961-03-15
Hydraulic device for setting up a mine stanchion.
BE577965A
(en )
1959-10-21
Device for deriving a direct voltage from an alternating voltage.
FR1216107A
(en )
1960-04-22
Device for detecting radioactive radiation
BE580675A
(en )
1960-01-13
Protective device for a pumping machine or installation.
BE585342A
(en )
1960-06-07
Uranium mining.
BE608070A
(en )
1962-01-02
Device for laying hydraulic support elements for mining operations.
BE578532A
(en )
1959-08-31
Flexible support for underground excavations.
BE615145A
(en )
1962-07-02
Encouragement device for mining operations.