|
US2634096A
|
|
Hoisting or haulage gear
|
|
GB655450A
|
|
Improvements in or relating to hoisting or haulage gear
|
|
GB435653A
|
|
Improvements in coal-cutting machines
|
|
GB422090A
|
|
Improvements in conveying apparatus
|
|
GB422594A
|
|
Improvements in or relating to coal and like cutting machines
|
|
GB422294A
|
|
Improvements in or relating to coal and like cutting machines
|
|
GB404214A
|
|
Improvements in or relating to coal and like cutting machines
|
|
GB374532A
|
|
Improvements in mining coal and other minerals
|
|
GB365316A
|
|
Improvements in coal-cutting machinery
|
|
GB346934A
|
|
Improvements in or relating to guiding or supporting rollers for belt conveyors or the like
|
|
GB332078A
|
|
Means for altering the alignment of a conveyer or other belt at different parts of its travel
|
|
US1773621A
|
|
Belt conveyer
|
|
GB297277A
|
|
Improvements in belt conveyors
|
|
US1708885A
|
|
Belt conveyer
|
|
GB266812A
|
|
Improvements relating to belt conveyors
|
