System for measuring contact rebounding,申请号US19390272125-传众专利搜索

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发明名称	System for measuring contact rebounding
摘要
申请公布号	US2221833(A)	申请公布日期	1940.11.19
申请号	US19390272125	申请日期	1939.05.06
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	CORY SAMUEL I.
分类号	H04M3/24;H04Q1/20	主分类号	H04M3/24
代理机构		代理人
主权项
地址

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