Lead for sounding purposes,申请号US19280280007-传众专利搜索

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发明名称	Lead for sounding purposes
摘要
申请公布号	US1789158(A)	申请公布日期	1931.01.13
申请号	US19280280007	申请日期	1928.05.23
申请人	ECHOMETER GESELLSCHAFT MIT BESCHRANKTER HAFTUNG	发明人	RUDOLPH WILHELM;SETTEGAST BERNHARD
分类号	G01C13/00	主分类号	G01C13/00
代理机构		代理人
主权项
地址

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