STRING DAMPER FOR PIANO-TYPE INSTRUMENTS,申请号CAD565142-传众专利搜索

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发明名称	STRING DAMPER FOR PIANO-TYPE INSTRUMENTS
摘要
申请公布号	CA565142(A)	申请公布日期	1958.10.28
申请号	CAD565142	申请日期
申请人	JOSEPH F. DVORAK	发明人	JOSEPH F. DVORAK
分类号		主分类号
代理机构		代理人
主权项
地址

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