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经营范围
发明名称
Roofing and siding construction
摘要
申请公布号
US2085552(A)
申请公布日期
1937.06.29
申请号
US19310524097
申请日期
1931.03.20
申请人
BAKELITE BUILDING PRODUCTS CO. INC.
发明人
STORM TRYGVE
分类号
E04D1/22
主分类号
E04D1/22
代理机构
代理人
主权项
地址
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