BE614306A
(en )
1962-08-23
Improvements to wear coatings
FR1267820A
(en )
1961-07-28
Improvements made to bogies
BE602702A
(en )
1961-08-16
Improvements to anchoring systems
FR1282158A
(en )
1962-01-19
Improvements to sizing installations
FR1277272A
(en )
1961-11-24
Improvements made to mine supports
FR1299443A
(en )
1962-07-20
Improvements made to retaining frames for mine clearance corridors
BE606910A
(en )
1961-12-01
Improvements to roof supports for mines and similar operations.
FR80824E
(en )
1963-06-21
Improvements made to retaining frames for mine clearance corridors
BE611764R
(en )
1962-06-20
Improvements made to retaining frames for mine clearance corridors
BE607969A
(en )
1962-03-08
Improvements made to retaining frames for mine clearance corridors
FR1359043A
(en )
1964-04-17
Improvements made to support frames for galleries or mine corridors
FR86128E
(en )
1965-12-17
Improvements made to retaining frames for mine clearance corridors
FR1352831A
(en )
1964-02-21
Improvements to sliding retaining frames for mine galleries
FR1232758A
(en )
1960-10-12
Improvements made to the support frames or arches for galleries and mine corridors
FR1280020A
(en )
1961-12-29
Articulated assembly for mine frames, especially for trapezoidal frames
FR1255168A
(en )
1961-03-03
Improvements in hydraulic support elements for mine clearance corridors
FR1253946A
(en )
1961-02-17
Improvements to sliding assemblies for mine frames
FR1272834A
(en )
1961-09-29
Improvements made to support installations for slaughter corridors in mines
FR1174140A
(en )
1959-03-06
Improvements made to support frames, in steel, for galleries or mine corridors
BE581708A
(en )
1960-02-15
Improvements made to support frames or arches for galleries and mine corridors.
FR1256107A
(en )
1961-03-17
Improvements to gyroscopes
FR1262048A
(en )
1961-05-26
Improvements to annular or curved support frames in several parts for underground mines
FR1265955A
(en )
1961-07-07
Improvements to vice-filing slides
FR1262161A
(en )
1961-05-26
Improvements made to agglomeration drums
FR84690E
(en )
1965-03-26
Improvements to sliding retaining frames for mine galleries