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发明名称
Machine for perforating pipe
摘要
申请公布号
US2629920(A)
申请公布日期
1953.03.03
申请号
US19490127125
申请日期
1949.11.14
申请人
PRIDY WHETSTINE B
发明人
PRIDY WHETSTINE B.
分类号
B23D45/12
主分类号
B23D45/12
代理机构
代理人
主权项
地址
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