Ring holder construction,申请号US19430476272-传众专利搜索

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发明名称	Ring holder construction
摘要
申请公布号	US2336719(A)	申请公布日期	1943.12.14
申请号	US19430476272	申请日期	1943.02.18
申请人	DAWSON JR JAMES C	发明人	JR. JAMES C. DAWSON,
分类号	B42F13/26	主分类号	B42F13/26
代理机构		代理人
主权项
地址

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