Expansion and contraction tool,申请号US19470773204-传众专利搜索

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发明名称	Expansion and contraction tool
摘要
申请公布号	US2535078(A)	申请公布日期	1950.12.26
申请号	US19470773204	申请日期	1947.09.10
申请人	LA MONT HERBERT D	发明人	MONT HERBERT D. LA
分类号	E04F21/22	主分类号	E04F21/22
代理机构		代理人
主权项
地址

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