Joint for road construction,申请号US19390288420-传众专利搜索

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发明名称	Joint for road construction
摘要
申请公布号	US2242610(A)	申请公布日期	1941.05.20
申请号	US19390288420	申请日期	1939.08.04
申请人	JOHNSON LOUIS B	发明人	JOHNSON LOUIS B.
分类号	E01C11/08	主分类号	E01C11/08
代理机构		代理人
主权项
地址

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