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发明名称
Improved excavating machine
摘要
申请公布号
GB541551(A)
申请公布日期
1941.12.02
申请号
GB19400009445
申请日期
1940.05.29
申请人
ROADLESS TRACTION LIMITED;PHILIP HENRY JOHNSON
发明人
分类号
E21C29/24
主分类号
E21C29/24
代理机构
代理人
主权项
地址
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