Improvements in or relating to hooks,申请号GB19420017090-传众专利搜索

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发明名称	Improvements in or relating to hooks
摘要
申请公布号	GB557054(A)	申请公布日期	1943.11.02
申请号	GB19420017090	申请日期	1942.12.01
申请人	BYRON JACKSON CO.	发明人
分类号	E21B19/04	主分类号	E21B19/04
代理机构		代理人
主权项
地址

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