Means to turn rotatable structures,申请号US19420438495-传众专利搜索

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发明名称	Means to turn rotatable structures
摘要
申请公布号	US2404639(A)	申请公布日期	1946.07.23
申请号	US19420438495	申请日期	1942.04.10
申请人	ENGINEERING AND RESEARCH CORPORATION	发明人	LANE FRANK B.
分类号	F41A27/20	主分类号	F41A27/20
代理机构		代理人
主权项
地址

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