Grooving machines for railway sleepers,申请号US19540415012-传众专利搜索

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发明名称	Grooving machines for railway sleepers
摘要
申请公布号	US2754861(A)	申请公布日期	1956.07.17
申请号	US19540415012	申请日期	1954.03.09
申请人	MATERIEL INDUSTRIEL S. A.	发明人	FAUREL PAUL;BRUGET ANDRE
分类号	E01B31/22	主分类号	E01B31/22
代理机构		代理人
主权项
地址

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