Retractable plumb bob,申请号US19590810846-传众专利搜索

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发明名称	Retractable plumb bob
摘要
申请公布号	US3064356(A)	申请公布日期	1962.11.20
申请号	US19590810846	申请日期	1959.05.04
申请人	KRUSE MELVIN S	发明人	KRUSE MELVIN S.
分类号	G01C15/10	主分类号	G01C15/10
代理机构		代理人
主权项
地址

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