FR1226787A
(en )
1960-08-16
Improvements made to hydraulic props, in particular for galleries or mine corridors
FR1276634A
(en )
1961-11-17
Improvements to mine roof supports
BE606910A
(en )
1961-12-01
Improvements to roof supports for mines and similar operations.
BE578537A
(en )
1959-11-09
Improvements made to hydraulic props, especially for galleries or mine corridors.
FR1207923A
(en )
1960-02-19
Improvements to hydraulic mine props
FR1175838A
(en )
1959-04-02
Improvements made to mine props, hydraulic
FR77878E
(en )
1962-05-04
Improvements made to hydraulic props, in particular for galleries or mine corridors
BE591689R
(en )
1960-12-09
Improvements made to hydraulic props, in particular for galleries or mine corridors
FR1359043A
(en )
1964-04-17
Improvements made to support frames for galleries or mine corridors
FR1221309A
(en )
1960-06-01
Improvements to pumps for hydraulic mine props
FR1175841A
(en )
1959-04-02
Improvements relating to hydraulic mine props
FR1321725A
(en )
1963-03-22
Improvements to hydraulic props for mines
BE576496A
(en )
1959-07-01
Improvements to pumps for hydraulic mine props
BE616593A
(en )
1962-10-18
Improvements made to hydraulic props for mines.
FR1284655A
(en )
1962-02-16
Lining panels for mine galleries
FR1174140A
(en )
1959-03-06
Improvements made to support frames, in steel, for galleries or mine corridors
FR1207659A
(en )
1960-02-18
Support bar, in particular for the roof of timbering of mining galleries
FR1229543A
(en )
1960-09-07
Improvements to hydraulic mine props
BE581708A
(en )
1960-02-15
Improvements made to support frames or arches for galleries and mine corridors.
FR1281058A
(en )
1962-01-08
Improvements to hydraulic props for mines
FR1315544A
(en )
1963-01-18
Haveuse, especially for mining
FR85958E
(en )
1965-11-19
Improvements to hydraulic props for mines
BE575063A
(en )
1959-07-24
Improvements made to hydro-pneumatic support devices, especially mine props.
BE605221A
(en )
1961-10-16
Improvements to mine roof supports.
BE581591R
(en )
1959-12-01
Improvements to breather for mine props.