Hook rule and compass,申请号US19360109879-传众专利搜索

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发明名称	Hook rule and compass
摘要
申请公布号	US2087600(A)	申请公布日期	1937.07.20
申请号	US19360109879	申请日期	1936.11.09
申请人	JOHN KNOBLAUCH	发明人	KNOBLAUCH JOHN
分类号	B43L9/04	主分类号	B43L9/04
代理机构		代理人
主权项
地址

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