Machine for engraving charts in wax,申请号US19270243099-传众专利搜索

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发明名称	Machine for engraving charts in wax
摘要
申请公布号	US1884302(A)	申请公布日期	1932.10.25
申请号	US19270243099	申请日期	1927.12.28
申请人	ROYAL ELECTROTYPE COMPANY	发明人	SHANKS DAVID F.
分类号	B44B3/00	主分类号	B44B3/00
代理机构		代理人
主权项
地址

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