Improvements in the manufacture of gratings,申请号GB19570032712-传众专利搜索

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发明名称	Improvements in the manufacture of gratings
摘要
申请公布号	GB855179(A)	申请公布日期	1960.11.30
申请号	GB19570032712	申请日期	1957.10.19
申请人	ANDREW MENTIS	发明人
分类号	B21D47/00;B21F27/12	主分类号	B21D47/00
代理机构		代理人
主权项
地址

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