Metallic ball-head hinge for nonmetallic spectacle-frames,申请号US19280290163-传众专利搜索

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发明名称	Metallic ball-head hinge for nonmetallic spectacle-frames
摘要
申请公布号	US1814032(A)	申请公布日期	1931.07.14
申请号	US19280290163	申请日期	1928.07.03
申请人	HEINRICH HAASE	发明人	HAASE HEINRICH
分类号	G02C5/22	主分类号	G02C5/22
代理机构		代理人
主权项
地址

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