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发明名称
Record punching machine
摘要
申请公布号
US2237116(A)
申请公布日期
1941.04.01
申请号
US19390306444
申请日期
1939.11.28
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
SCHEERER WALTER
分类号
主分类号
代理机构
代理人
主权项
地址
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