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发明名称
Process and apparatus for manufacturing design roofing
摘要
申请公布号
US2056273(A)
申请公布日期
1936.10.06
申请号
US19330694125
申请日期
1933.10.18
申请人
THE BARRETT COMPANY
发明人
HOLDSWORTH RICHARD A.
分类号
E04D1/26
主分类号
E04D1/26
代理机构
代理人
主权项
地址
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