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经营范围
发明名称
Dirigible frame
摘要
申请公布号
US1788595(A)
申请公布日期
1931.01.13
申请号
US19290346131
申请日期
1929.03.11
申请人
ROSS DAVID E
发明人
ROSS DAVID E.
分类号
B64B1/00
主分类号
B64B1/00
代理机构
代理人
主权项
地址
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