AN INTRINSICALLY SAFE MAGNETO-SOUND POWERED TELEPHONE,申请号IN1977DE09719-传众专利搜索

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发明名称	AN INTRINSICALLY SAFE MAGNETO-SOUND POWERED TELEPHONE
摘要
申请公布号	IN146259(B)	申请公布日期	1979.04.07
申请号	IN1977DE09719	申请日期	1977.05.11
申请人	COUNCIL SCIENT IND RESEARCH	发明人	SHASTRY B S;SRIVASTAVA S CH;MITRA S R;SINHA R K;SUDHIR KUMAR;DUTTA M K
分类号	H04L23/00;(IPC1-7):H04L23/00	主分类号	H04L23/00
代理机构		代理人
主权项
地址

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