Adjustable curve ruler,申请号US19310551125-传众专利搜索

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发明名称	Adjustable curve ruler
摘要
申请公布号	US1953282(A)	申请公布日期	1934.04.03
申请号	US19310551125	申请日期	1931.07.16
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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