Railroad safety device,申请号US19400364350-传众专利搜索

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法人/股东/高管

发明名称	Railroad safety device
摘要
申请公布号	US2273705(A)	申请公布日期	1942.02.17
申请号	US19400364350	申请日期	1940.11.05
申请人	DIEGO GUERRERO	发明人	GUERRERO DIEGO
分类号	A63H19/16;B61F9/00	主分类号	A63H19/16
代理机构		代理人
主权项
地址

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