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发明名称
COLLAPSIBLE SHELTER
摘要
申请公布号
US3534512(A)
申请公布日期
1970.10.20
申请号
USD3534512
申请日期
1969.03.13
申请人
WILLIAM BALLAS
发明人
WILLIAM BALLAS
分类号
E04B1/344;E04H1/12;(IPC1-7):E04B1/34;E04H6/02
主分类号
E04B1/344
代理机构
代理人
主权项
地址
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