GB8622018D0
(en )
1986-10-22
Mineral mining installations
PL255132A1
(en )
1987-03-23
Longwall type mechanical coal miner with a dustiness controlling system
GB8620345D0
(en )
1986-10-01
Shearer loaders
GB8610743D0
(en )
1986-06-04
Control for shearer loader
PL255078A1
(en )
1987-03-23
Control system with an electronic delayer for a longwall type mechanical coal miner with two mining heads
PL255199A1
(en )
1987-04-21
Mining head for a hearing mechanical coal miner
PL254845A1
(en )
1987-04-21
Mining head for a heading mechanical coal miner
PL246656A1
(en )
1985-09-24
Mining head for a mechanical coal miner
PL258173A1
(en )
1987-12-14
Mining head of a mechanical coal miner with sprinkling system
PL248896A1
(en )
1986-02-11
Mechanical coal miner mining head
PL252477A1
(en )
1986-09-23
Mining head of a mechanical coal miner
PL245716A1
(en )
1985-07-30
Mining head for a longwall mechanical coal miner
PL251151A1
(en )
1986-07-01
Mechanical coal miner for mining longwalls
PL274037A1
(en )
1990-02-05
Longwall coal miner
PL248792A1
(en )
1986-02-11
Mining head for mechanical coal miners
PL253160A1
(en )
1986-11-18
Mining head of a longwall type mechanical coal miner
PL276792A1
(en )
1990-07-09
Mechanical coal miner with a stringless advance mechanism
PL264058A1
(en )
1988-09-15
Optimizing control system ensuring optimum advancement rate of a mechanical coal miner
PL254203A1
(en )
1986-12-30
Mining head of a longwall mechanical coal miner
PL244025A1
(en )
1985-04-09
Mining head for a mechanical coal miner
PL255438A1
(en )
1987-03-23
Mining head for a mechanical coal miner of longwall type
PL252685A1
(en )
1986-10-07
Slidably mounted mining head of a mechanical coal miner
PL252253A1
(en )
1986-09-09
Method of longwall mining of coal with a double-drum mechanical coal miner
PL256556A1
(en )
1987-06-29
Mine lining with a lemniscate mechanism
PL256410A1
(en )
1987-06-29
Mechanical coal miner of longwall type with a dust collecting unit