Improvements in and relating to acoustic signalling apparatus,申请号GB19330019836-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 signalling apparatus
摘要
申请公布号	GB408844(A)	申请公布日期	1934.04.19
申请号	GB19330019836	申请日期	1933.07.13
申请人	N. V. MACHINERIEEN-EN APPARATEN FABRIEKEN	发明人
分类号	H04R1/34	主分类号	H04R1/34
代理机构		代理人
主权项
地址

您可能感兴趣的专利

程控电话交换机(TC-106)

花泥(结婚花球托BridalⅡ)

空气压缩机

药品包装盒

防盗警报器

包装盒(龙胆泻肝丸)

电脑主机面板

Method for producing molding die for synthetic resin lens barrel having a helicoid and for producing the lens barrel

Non-return valve

ASPHALT ROOFING PRODUCTS SURFACED WITH NATURALLY COLORED ROCK GRANULES

Ink refill assembly

Coaxial switching connector

Telephone exchange apparatus

Controller for medical image review station

A vehicle brake control device

INTEGRATED CIRCUIT COMPRISING CONNECTION PADS EMERGING ON ONE SURFACE