 |
| |||
| powered support system; powered supports; selenolite-advancing support; walker props; walker support | |||
| powered support | |||
| schreitender Ausbau: 4 phrases in 3 subjects |
| Coal | 2 |
| General | 1 |
| Mining | 1 |
|
| |||
| powered support system; powered supports; selenolite-advancing support; walker props; walker support | |||
| powered support | |||
| schreitender Ausbau: 4 phrases in 3 subjects |
| Coal | 2 |
| General | 1 |
| Mining | 1 |