Drainage system for airports and highways,申请号US19470732169-传众专利搜索

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发明名称	Drainage system for airports and highways
摘要
申请公布号	US2649720(A)	申请公布日期	1953.08.25
申请号	US19470732169	申请日期	1947.03.04
申请人	COMPANY THE UNION SAVINGS TRUS;HELTZEL CARL J	发明人	THE UNION SAVINGS & TRUST COMPANY;HELTZEL CARL J.
分类号	E01C11/02;E01C11/22	主分类号	E01C11/02
代理机构		代理人
主权项
地址

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