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发明名称
SKYLIGHT
摘要
申请公布号
US3440779(A)
申请公布日期
1969.04.29
申请号
USD3440779
申请日期
1967.10.02
申请人
DENNIS E. HELMA
发明人
DENNIS E. HELMA
分类号
E04D13/03;(IPC1-7):E04D13/03
主分类号
E04D13/03
代理机构
代理人
主权项
地址
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