Improvements in bobbin changing contrivances for spinning frames,申请号GB19300000491-传众专利搜索

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发明名称	Improvements in bobbin changing contrivances for spinning frames
摘要
申请公布号	GB340788(A)	申请公布日期	1931.01.08
申请号	GB19300000491	申请日期	1930.01.06
申请人	JACOB HEINRICH BEK	发明人
分类号	D01H9/04	主分类号	D01H9/04
代理机构		代理人
主权项
地址

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