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经营范围
发明名称
Prefabricated building structure
摘要
申请公布号
US3102617(A)
申请公布日期
1963.09.03
申请号
US19600000415
申请日期
1960.01.04
申请人
LEROY HELFMAN
发明人
HELFMAN LEROY
分类号
E04B1/30
主分类号
E04B1/30
代理机构
代理人
主权项
地址
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