Adjustable curved ruler,申请号US19300471124-传众专利搜索

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发明名称	Adjustable curved ruler
摘要
申请公布号	US1893690(A)	申请公布日期	1933.01.10
申请号	US19300471124	申请日期	1930.07.28
申请人	WESTON WILLIAM S	发明人	WESTON WILLIAM S.
分类号	B43L13/22	主分类号	B43L13/22
代理机构		代理人
主权项
地址

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