Folded and pressed ring,申请号US19340731106-传众专利搜索

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发明名称	Folded and pressed ring
摘要
申请公布号	US2036520(A)	申请公布日期	1936.04.07
申请号	US19340731106	申请日期	1934.06.18
申请人	FITZGERALD PATRICK J	发明人	FITZGERALD PATRICK J.
分类号	B21K1/24	主分类号	B21K1/24
代理机构		代理人
主权项
地址

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