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发明名称
MINE ROOF SUPPORTS
摘要
申请公布号
US3503302(A)
申请公布日期
1970.03.31
申请号
USD3503302
申请日期
1967.05.10
申请人
HERMANN JOSEF SCHULZE HEIMING;HERBERT SCHULZE HEIMING
发明人
HERMANN-JOSEF SCHULZE-HEIMING;HERBERT SCHULZE-HEIMING
分类号
E21D23/00;(IPC1-7):F01B25/26;F15B11/08;F16K31/44
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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