Record changing mechanism,申请号US19290367348-传众专利搜索

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发明名称	Record changing mechanism
摘要
申请公布号	US1807073(A)	申请公布日期	1931.05.26
申请号	US19290367348	申请日期	1929.05.31
申请人	SCHULZ PAUL H	发明人	SCHULZ PAUL H.
分类号	G11B17/04	主分类号	G11B17/04
代理机构		代理人
主权项
地址

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