Railway track gauge,申请号US19310549402-传众专利搜索

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发明名称	Railway track gauge
摘要
申请公布号	US1909535(A)	申请公布日期	1933.05.16
申请号	US19310549402	申请日期	1931.07.08
申请人	ROBERT HANFORD HAROLD HENRY	发明人	HANFORD HAROLD HENRY ROBERT
分类号	E01B35/02	主分类号	E01B35/02
代理机构		代理人
主权项
地址

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