Propeller,申请号US19360116075-传众专利搜索

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发明名称	Propeller
摘要
申请公布号	US2145413(A)	申请公布日期	1939.01.31
申请号	US19360116075	申请日期	1936.12.16
申请人	BELFIELD WILLIAM A	发明人	BELFIELD WILLIAM A.
分类号	B64C11/00	主分类号	B64C11/00
代理机构		代理人
主权项
地址

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