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经营范围
发明名称
ROOFING CONSTRUCTION
摘要
申请公布号
US3541745(A)
申请公布日期
1970.11.24
申请号
USD3541745
申请日期
1968.06.07
申请人
P.A.L. DEV. CORP.
发明人
JOHN F. PROBST
分类号
E04D12/00;(IPC1-7):E04D5/02
主分类号
E04D12/00
代理机构
代理人
主权项
地址
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