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发明名称
Rock cutting machine
摘要
申请公布号
US2523601(A)
申请公布日期
1950.09.26
申请号
US19470752612
申请日期
1947.06.05
申请人
EDWARD SWIFT
发明人
SWIFT EDWARD
分类号
B28D1/22
主分类号
B28D1/22
代理机构
代理人
主权项
地址
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