Rail flaw-detecting device,申请号US19480060198-传众专利搜索

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发明名称	Rail flaw-detecting device
摘要
申请公布号	US2645938(A)	申请公布日期	1953.07.21
申请号	US19480060198	申请日期	1948.11.16
申请人	THE PENNSYLVANIA RAILROAD COMPANY	发明人	BILLSTEIN ARTHUR E. F.
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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