Parallel ruler fitted with rollers,申请号US19520290026-传众专利搜索

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发明名称	Parallel ruler fitted with rollers
摘要
申请公布号	US2789355(A)	申请公布日期	1957.04.23
申请号	US19520290026	申请日期	1952.05.26
申请人	HANS PRIESS	发明人	PRIESS HANS
分类号	B43L7/04	主分类号	B43L7/04
代理机构		代理人
主权项
地址

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