Railway hand brake,申请号US19380192527-传众专利搜索

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发明名称	Railway hand brake
摘要
申请公布号	US2189978(A)	申请公布日期	1940.02.13
申请号	US19380192527	申请日期	1938.02.25
申请人	JEFFREY DYKE HERBERT	发明人	DYKE HERBERT JEFFREY
分类号	B61H13/04	主分类号	B61H13/04
代理机构		代理人
主权项
地址

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