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发明名称
Library construction
摘要
申请公布号
US1854158(A)
申请公布日期
1932.04.12
申请号
US19300465321
申请日期
1930.07.02
申请人
SNEAD & COMPANY
发明人
MACDONALD ANGUS S.
分类号
E04H3/06;E04H3/08
主分类号
E04H3/06
代理机构
代理人
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