An improvement in or relating to hobs for generating the teeth of worm wheels,申请号GB19300005754-传众专利搜索

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发明名称	An improvement in or relating to hobs for generating the teeth of worm wheels
摘要
申请公布号	GB344199(A)	申请公布日期	1931.03.05
申请号	GB19300005754	申请日期	1930.02.21
申请人	HENRY GRAFTON	发明人
分类号	B23F21/16	主分类号	B23F21/16
代理机构		代理人
主权项
地址

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