PL323324A1
(en )
1998-06-08
Short-wall mining machine for underground coal mines
PL330776A1
(en )
1999-07-19
Guinding and advancing mechanism of a coal mining machine in particular of a longwall mechanical coal miner
PL315640A1
(en )
1998-02-16
Mining head of a longwall coal miner
PL313639A1
(en )
1997-10-13
Mining head of a longwall coal miner
PL294468A1
(en )
1993-11-15
Mining head of a coal miner
PL312850A1
(en )
1997-08-18
Arm of a longwall coal miner
PL54866Y1
(en )
1997-01-31
Mining head of a mechanical coal miner
PL315484A1
(en )
1998-02-02
Mining and loading unit of a longwall coal miner
PL55769Y1
(en )
1998-01-30
Sledge of a mechanical coal miner for longwall use
PL54871Y1
(en )
1997-01-31
Mining head a mechanical coal miner
PL316086A1
(en )
1996-12-23
Longwall coal miner
PL310481A1
(en )
1997-03-17
Mining head for a longwall mechanical coal miner and method of cutting coal by means of such mining head
PL310482A1
(en )
1997-03-17
Mining head for a longwall mechanical coal miner and method of cutting coal by means of such mining head
PL316062A1
(en )
1998-03-16
Longwall coal miner
PL298786A1
(en )
1993-11-02
Cutting head for longwall coal miners
PL293720A1
(en )
1993-04-19
Mechanical coal miner for longwall workings
PL294281A1
(en )
1993-04-19
Mechanical coal miner for longwall workings
PL310256A1
(en )
1997-03-03
Longwall mechanical coal miner
PL321225A1
(en )
1999-02-01
Severed cutting head of a longwall mechanical coal miner
GB9424060D0
(en )
1995-01-18
Underground coal gasification of highwall mining
PL318814A1
(en )
1998-09-14
Longwall mechanical coal miner
PL323512A1
(en )
1999-06-07
Longwall mechanical coal miner
PL321231A1
(en )
1999-02-01
Longwall mechanical coal miner
PL54104Y1
(en )
1996-05-31
Mining member of a mechanical longwall miner
PL245716A1
(en )
1985-07-30
Mining head for a longwall mechanical coal miner