Acoustic signal mechanism,申请号US19280327829-传众专利搜索

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发明名称	Acoustic signal mechanism
摘要
申请公布号	US1797120(A)	申请公布日期	1931.03.17
申请号	US19280327829	申请日期	1928.12.22
申请人	MOTO METER GAUGE & EQUIPMENT CORPORATION	发明人	BENNETT MORRIS H.
分类号	G10K9/15	主分类号	G10K9/15
代理机构		代理人
主权项
地址

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