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经营范围
发明名称
Building system
摘要
申请公布号
US3369334(A)
申请公布日期
1968.02.20
申请号
US19650490871
申请日期
1965.09.28
申请人
RALPH R. BERG
发明人
BERG RALPH R.
分类号
E04B1/06;E04B1/22;E04C5/16
主分类号
E04B1/06
代理机构
代理人
主权项
地址
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