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发明名称
Method of and means for making curved pipe fittings
摘要
申请公布号
US1916645(A)
申请公布日期
1933.07.04
申请号
US19320639272
申请日期
1932.10.24
申请人
HALL TAYLOR JAMES
发明人
TAYLOR JAMES HALL
分类号
B21C23/12
主分类号
B21C23/12
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代理人
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