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发明名称
Flashing ring
摘要
申请公布号
US1834823(A)
申请公布日期
1931.12.01
申请号
US19280286690
申请日期
1928.06.19
申请人
JAMES J. BROPSON
发明人
BROPSON JAMES
分类号
E04D13/147
主分类号
E04D13/147
代理机构
代理人
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地址
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