| 发明名称 |
Coal mining machine |
| 摘要 |
|
| 申请公布号 |
GB649962(A) |
申请公布日期 |
1951.02.07 |
| 申请号 |
GB19480014274 |
申请日期 |
1948.05.26 |
| 申请人 |
JULIUS HERRMANN |
发明人 |
|
| 分类号 |
E21C35/12 |
主分类号 |
E21C35/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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