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发明名称
Annular ring parachute
摘要
申请公布号
US2929588(A)
申请公布日期
1960.03.22
申请号
US19560585000
申请日期
1956.05.15
申请人
NORTHROP CORPORATION
发明人
EWING EDGAR G.
分类号
B64D17/00
主分类号
B64D17/00
代理机构
代理人
主权项
地址
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