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发明名称
Perforating device
摘要
申请公布号
US2053067(A)
申请公布日期
1936.09.01
申请号
US19350020128
申请日期
1935.05.07
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
CUNNINGHAM JAMES M.
分类号
主分类号
代理机构
代理人
主权项
地址
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