GB2260802B
(en )
1995-01-11
Method of activating a mine
PL296533A1
(en )
1994-05-16
Method of providing a coal miner cutting head with sutters and coal miner cutting head obtained thereby
PL300950A1
(en )
1995-05-15
Method of mining coal and mining head therefor
PL275158A1
(en )
1990-04-17
Cutting head of a mechanical coal miner
PL55559Y1
(en )
1997-10-31
Cutting head of a mechanical coal miner
PL281043A1
(en )
1991-02-11
Cutting head of a machanical coal miner
SU1592486A1
(en )
1990-09-15
Cutting head of mine cutter-loader
PL275449A1
(en )
1990-04-30
Cutting head of a mechanical coal iner with a sprinkling system
PL299859A1
(en )
1995-02-06
Coal miner's cutting head
GB2219762B
(en )
1992-12-02
Dual purpose hammer and hammer head therefore
PL294468A1
(en )
1993-11-15
Mining head of a coal miner
PL295055A1
(en )
1993-12-27
Coal miner's cutting head provided with a sprinkling system
PL300527A1
(en )
1995-04-03
Method of regenerating a mining cutter and mining cutter obtained thereby
PL298641A1
(en )
1993-10-04
Cutting head of a longwall joy miner
PL297887A1
(en )
1994-09-05
Method of mounting a cutting head ona coal mining machine and cutting head as such
PL294020A1
(en )
1993-11-15
Method of making a cutter bit and cutter bit made thereby
PL294021A1
(en )
1993-11-15
Method of making a cutter bit and cutter bit made thereby
PL256159A1
(en )
1987-07-13
Mechanical miner cutting head
PL290263A1
(en )
1993-04-05
Method of making a coal cutting bit
PL54866Y1
(en )
1997-01-31
Mining head of a mechanical coal miner
PL298786A1
(en )
1993-11-02
Cutting head for longwall coal miners
PL254915A1
(en )
1987-02-23
Cutting and desludging head
PL300526A1
(en )
1995-04-03
Method of making a cutter for coal mining machines and cutter obtained thereby
PL263670A1
(en )
1988-09-15
Boring and facing head
PL276842A1
(en )
1990-07-09
Mining unit of the drilling head