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发明名称
Machine for punching holes in documents and the like
摘要
申请公布号
US1763869(A)
申请公布日期
1930.06.17
申请号
US19270227752
申请日期
1927.10.21
申请人
WALLACE SPIERS WILLIAM
发明人
SPIERS WILLIAM WALLACE
分类号
B26F1/36
主分类号
B26F1/36
代理机构
代理人
主权项
地址
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