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发明名称
Roofing material
摘要
申请公布号
US2895432(A)
申请公布日期
1959.07.21
申请号
US19540455260
申请日期
1954.09.10
申请人
AMERICAN STEEL BAND COMPANY
发明人
BOWMAN JOSEPH H.
分类号
E04D3/38;E04D11/02;E04D13/16
主分类号
E04D3/38
代理机构
代理人
主权项
地址
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