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发明名称
Beam structure
摘要
申请公布号
US3193063(A)
申请公布日期
1965.07.06
申请号
US19620195841
申请日期
1962.05.18
申请人
DONN PRODUCTS INCORPORATED
发明人
BROWN DONALD A.;JR. LUCIEN R. DOWNING,
分类号
E04B1/58;E04B9/12
主分类号
E04B1/58
代理机构
代理人
主权项
地址
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