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发明名称
Expanding mandrel
摘要
申请公布号
US1846438(A)
申请公布日期
1932.02.23
申请号
US19310508074
申请日期
1931.01.12
申请人
A. O. SMITH CORPORATION
发明人
RICHTER WALTHER;RICHTER WALTER E.
分类号
B23K9/035
主分类号
B23K9/035
代理机构
代理人
主权项
地址
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