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发明名称
Sheet-metal doorframe construction
摘要
申请公布号
US1769280(A)
申请公布日期
1930.07.01
申请号
US19270188274
申请日期
1927.05.02
申请人
WELSHOFER JOHN J
发明人
WELSHOFER JOHN J.
分类号
E05B15/02
主分类号
E05B15/02
代理机构
代理人
主权项
地址
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