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发明名称
Pipe forming machine
摘要
申请公布号
US1973164(A)
申请公布日期
1934.09.11
申请号
US19310546253
申请日期
1931.06.23
申请人
DREIS EDWARD J
发明人
DREIS EDWARD J.
分类号
B21D5/14
主分类号
B21D5/14
代理机构
代理人
主权项
地址
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