Rail flaw detector mechanism,申请号US19350005534-传众专利搜索

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发明名称	Rail flaw detector mechanism
摘要
申请公布号	US2170977(A)	申请公布日期	1939.08.29
申请号	US19350005534	申请日期	1935.02.08
申请人	SPERRY PRODUCTS, INC.	发明人	SCHUMACHER HENRY;PERRY WALTER M.;LANTY LOREN J. DE
分类号	B61K9/10	主分类号	B61K9/10
代理机构		代理人
主权项
地址

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