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发明名称
Propeller
摘要
申请公布号
US1783225(A)
申请公布日期
1930.12.02
申请号
US19270244021
申请日期
1927.12.31
申请人
PITTSBURGH SCREW & BOLT COMPANY
发明人
DICKS THOMAS A.
分类号
B64C11/06
主分类号
B64C11/06
代理机构
代理人
主权项
地址
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