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经营范围
发明名称
Oscillating air engine
摘要
申请公布号
US1769372(A)
申请公布日期
1930.07.01
申请号
US19250050661
申请日期
1925.08.17
申请人
NATHANIEL KOEHN
发明人
KOEHN NATHANIEL
分类号
B24B15/08;F01C9/00
主分类号
B24B15/08
代理机构
代理人
主权项
地址
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