Watch stem bushing,申请号US19400319647-传众专利搜索

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发明名称	Watch stem bushing
摘要
申请公布号	US2268749(A)	申请公布日期	1942.01.06
申请号	US19400319647	申请日期	1940.02.14
申请人	GREENBERG CHARLES B	发明人	GREENBERG CHARLES B.
分类号	G04B37/10	主分类号	G04B37/10
代理机构		代理人
主权项
地址

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