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发明名称
Sheet metal elbow and method of producing
摘要
申请公布号
US1869926(A)
申请公布日期
1932.08.02
申请号
US19290375933
申请日期
1929.07.05
申请人
AMERICAN VALVE AND ENAMELING CORPORATION
发明人
WULF CHARLES A.
分类号
B23K11/00
主分类号
B23K11/00
代理机构
代理人
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