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发明名称
Method of bending tubing
摘要
申请公布号
US1874012(A)
申请公布日期
1932.08.30
申请号
US19310508136
申请日期
1931.01.12
申请人
FRED HOTCHNER
发明人
HOTCHNER FRED
分类号
C03B23/06
主分类号
C03B23/06
代理机构
代理人
主权项
地址
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