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发明名称
Mining pick
摘要
申请公布号
US3239275(A)
申请公布日期
1966.03.08
申请号
US19620186688
申请日期
1962.04.11
申请人
CHARBONNAGE DE FRANCE
发明人
BELUGOU PIERRE
分类号
E21C35/18
主分类号
E21C35/18
代理机构
代理人
主权项
地址
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