Signaling apparatus for grade crossings,申请号US19370160972-传众专利搜索

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发明名称	Signaling apparatus for grade crossings
摘要
申请公布号	US2246025(A)	申请公布日期	1941.06.17
申请号	US19370160972	申请日期	1937.08.26
申请人	JULIUS PINTSCH KOMMANDITGESELLSCHAFT	发明人	WILCKENS ERNST
分类号	B61L29/28	主分类号	B61L29/28
代理机构		代理人
主权项
地址

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