FR1327260A
(en )
1963-05-17
Anchoring device, in particular for stabilizing mine roofs
BE612390A
(en )
1962-07-09
Mooring device for coal mining crew, usable in particular in mines.
FR1308546A
(en )
1962-11-03
Mooring device for coal mining crew, usable in particular in mines
BE595330A
(en )
1961-01-16
Bil-spindle support device, in particular for mine tunnel ceilings.
BE612500A
(en )
1962-07-10
Latch activated for coal extraction, usable in particular in mines
BE577399A
(en )
1959-07-31
Device for the extraction of coal by means of a planing crew guided along a conveyor, usable in particular in mines.
FR1216554A
(en )
1960-04-26
Connection device for retaining caps, usable in particular in mines
FR1321556A
(en )
1963-03-22
Cutting device, especially for coal mining machine
FR1344196A
(en )
1963-11-29
Plane activated for coal extraction, usable in particular in mines
FR1242240A
(en )
1960-09-23
Feeding device for mining machines, usable in particular in mines
FR1450972A
(en )
1966-06-24
Device for mooring coal mining equipment, usable in the veins by straightening
FR1258759A
(en )
1961-04-14
Progression device for mining
FR1377162A
(en )
1964-10-31
Hydraulic mooring device for conveyor usable in particular in mines
FR1276610A
(en )
1961-11-17
crew for the extraction of coal and other minerals, by cutting or planing, usable in particular in mines
BE591507A
(en )
1960-12-02
Advance device for a size conveyor, usable in particular in mines.
BE588087A
(en )
1960-08-26
Hydraulic device for mooring the main drive mechanism of a pruning conveyor, usable in particular in mines.
FR78605E
(en )
1962-08-17
Support device for the skidding, as a whole, of the cutting conveyors used in mines
FR1368895A
(en )
1964-08-07
Device for drilling galleries and similar sites in mines, in particular in coal mines
FR78497E
(en )
1962-07-27
Mooring device for conveyor placed in front of a working face, usable in particular in mines
FR78250E
(en )
1962-06-22
Mooring device for conveyor placed in front of a working face, usable in particular in mines
FR1315544A
(en )
1963-01-18
Haveuse, especially for mining
FR1346982A
(en )
1963-12-27
Ram plane for the extraction of coal by percussion, usable in particular in mines for cutting operations
FR86158E
(en )
1965-12-24
crew for the extraction of coal and other minerals by cutting or planing, usable in particular in mines
FR76295E
(en )
1961-09-29
Extraction device, usable in particular in mines
FR1438724A
(en )
1966-05-13
Device for guiding the chain of a coal plane, usable in particular in mines