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经营范围
发明名称
Asbestos-cement beams
摘要
申请公布号
GB565251(A)
申请公布日期
1944.11.02
申请号
GB19430008852
申请日期
1943.06.02
申请人
WILLIAM FREDERICK GIBSON
发明人
分类号
E04B5/26
主分类号
E04B5/26
代理机构
代理人
主权项
地址
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