Sound producing device,申请号US19390284975-传众专利搜索

首页产品黄页商标征信

会员服务注册登录

法人/股东/高管

发明名称	Sound producing device
摘要
申请公布号	US2238035(A)	申请公布日期	1941.04.15
申请号	US19390284975	申请日期	1939.07.17
申请人	YEW CHAR	发明人	CHAR YEW
分类号	A63H5/00	主分类号	A63H5/00
代理机构		代理人
主权项
地址

您可能感兴趣的专利

Multi-point autofocus system

Configuration and method for the low-loss writing of an MRAM

Self aligning optical detector

Light spot position sensor and displacement measuring device

IMAGE FORMING APPARATUS

Exposing apparatus

Inkjet printing apparatus

Ink jet recording method, recording apparatus and data processing method

On-vehicle rod antenna device

Processor based wireless detector

Vehicle communication device having switchable operation mode and radio wave intensity checking device

Method for adjusting the inductance of an inductor

Frequency controlled oscillator

Static logic design for CMOS

Method for calibrating a semiconductor testing device, a semiconductor testing apparatus, and a method for testing a semiconductor device

Voltage supply for a sensor unit and acceleration sensor unit with such a voltage supply

Optical scanning apparatus and image forming device using the same

CURRENT CONTROL OF OUTPUT SWING

Foam blocks for construction of mine tunnel stoppings

Process and apparatus for the production of a component consisting of a fiber reinforced material