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发明名称
Balloon distress signal
摘要
申请公布号
US2862531(A)
申请公布日期
1958.12.02
申请号
US19560608884
申请日期
1956.09.10
申请人
WALKER FRANK S
发明人
WALKER FRANK S.
分类号
B64D25/20
主分类号
B64D25/20
代理机构
代理人
主权项
地址
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