FR1369646A
(en )
1964-08-14
Electrolytic cell charger
FR1305495A
(en )
1962-10-05
Improvements made to systems to seal two tubular elements together
FR1314900A
(en )
1963-01-11
Improvements made to mobile frames with several elements for the support of mining corridors
BE613904A
(en )
1962-05-29
Improvements made to mobile frames with several elements for the support of mining corridors
FR1489687A
(en )
1967-07-21
Improvements to elements for the assembly of truss constructions
GB1037106A
(en )
1966-07-27
Gyro compass
FR1337706A
(en )
1963-09-13
Improvement in mechanical progression mine supports
FR1334784A
(en )
1963-08-09
metal elements that can be combined for the erection of a frame
FR1377391A
(en )
1964-11-06
Porous body formed from elements welded together
OA01649A
(en )
1969-09-20
Improvements to cantilever constructions for roofs and the like.
FR1255168A
(en )
1961-03-03
Improvements in hydraulic support elements for mine clearance corridors
FR1316824A
(en )
1963-02-01
Framework for mining
FR1326135A
(en )
1963-05-03
Improvements to construction elements
FR1232758A
(en )
1960-10-12
Improvements made to the support frames or arches for galleries and mine corridors
FR1299443A
(en )
1962-07-20
Improvements made to retaining frames for mine clearance corridors
FR1340145A
(en )
1963-10-11
Mine roof support
BE619140A
(en )
1962-10-15
Horizontal load moving crane
FR1346451A
(en )
1963-12-20
Make-up case refinements
FR1304497A
(en )
1962-09-21
Improvements made to spacers or spacers for neighboring frame segments or support frames in mine corridors
FR1310596A
(en )
1962-11-30
Improvements to assembly devices for metal scaffolding elements
FR1341918A
(en )
1963-11-02
assembly elements of metal tubes for various constructions
FR1216412A
(en )
1960-04-25
Improvements to assembly devices for sliding elements, in particular for mine sliding frames
FR80824E
(en )
1963-06-21
Improvements made to retaining frames for mine clearance corridors
FR1344502A
(en )
1963-11-29
Further training in support frames for mine galleries
FR1338863A
(en )
1963-10-04
Clockwork dial support