Highway crossing protection control apparatus,申请号US19520319875-传众专利搜索

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发明名称	Highway crossing protection control apparatus
摘要
申请公布号	US2790895(A)	申请公布日期	1957.04.30
申请号	US19520319875	申请日期	1952.11.12
申请人	WESTINGHOUSE AIR BRAKE COMPANY	发明人	SCHAEFER EDWIN J.
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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