Workman's warning system for railways,申请号US19480020172-传众专利搜索

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法人/股东/高管

发明名称	Workman's warning system for railways
摘要
申请公布号	US2542104(A)	申请公布日期	1951.02.20
申请号	US19480020172	申请日期	1948.04.10
申请人	PATSY ADDORISIO	发明人	ADDORISIO PATSY
分类号	B61L23/06	主分类号	B61L23/06
代理机构		代理人
主权项
地址

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