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发明名称
Variable pitch propeller mechanism
摘要
申请公布号
US1877115(A)
申请公布日期
1932.09.13
申请号
US19290395261
申请日期
1929.09.26
申请人
RAPP ZIPAY JOHN
发明人
ZIPAY JOHN RAPP
分类号
B64C11/36
主分类号
B64C11/36
代理机构
代理人
主权项
地址
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