Improvements in and relating to acoustic systems and apparatus,申请号GB19420006298-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	Improvements in and relating to acoustic systems and apparatus
摘要
申请公布号	GB557266(A)	申请公布日期	1943.11.12
申请号	GB19420006298	申请日期	1942.05.09
申请人	WALTER HEWIT ALLAN	发明人
分类号	H04R23/00	主分类号	H04R23/00
代理机构		代理人
主权项
地址

您可能感兴趣的专利

Optical disk and optical disk apparatus.

METHOD OF CONTROLLING SECRECY OF PERSONAL COMMUNICATION.

Catalyst for purifying exhaust gases.

(A) ;METHOD AND EQUIPMENT TO EXPAND NARROWED THECA BLOOD VESSEL

Hairdressing composition.

Couplable washing apparatus.

Tissue repair device and apparatus and method for fabricating same.

电动按摩器AM-2

电热驱蚊器(C)

Integrated SCSI and ethernet controller on PCI local bus.

Endotracheal tube and mass spectrometer.

Polymer recycling by selective dissolution.

Case carburized stainless steel alloy for high temperature applications.

A reactive dye composition and a method for dyeing or printing of fiber materials using the same.

Semiconductor laser with AlInP or AlGaInP burying layer and fabrication method thereof.

METHOD OF MANUFACTURING WOOD-LIKE PRODUCT AND THE PRODUCT.

Image forming apparatus having a toner collecting mechanism.

Efficient bi-directional optical fiber amplifier for missile guidance data link repeater.