Improvements relating to telephone systems,申请号GB19340007407-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 relating to telephone systems
摘要
申请公布号	GB427841(A)	申请公布日期	1935.05.01
申请号	GB19340007407	申请日期	1934.03.08
申请人	SIEMENS BROTHERS & CO. LIMITED;REGINALD GRIFFITH DIXON;RONALD ISAAC HERBERT CLARK	发明人
分类号	H04Q1/32	主分类号	H04Q1/32
代理机构		代理人
主权项
地址

您可能感兴趣的专利

HEATING COOKING APPARATUS

INTAKE/EXHAUST CYLINDER

VIBRATION DAMPING DEVICE FOR ROTARY COMPRESSOR

ROTARY COMPRESSOR

COMPRESSOR FOR REFRIGERATOR

THROTTLE CONTROL DEVICE

INTAKE CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

VARIABLE TIMING VALVE SYSTEM

SCROLL COMPRESSOR

CONTROL DEVICE OF ENGINE

ENGINE SPEED CONTROL DEVICE OF SPECIAL VEHICLE

CASING FIXING DEVICE IN ROTARY TYPE CASING DRIVER

DEVICE FOR LAYING BLOCK ON SLOPE FACE

CONSTRUCTION OF BALUSTRADE FOR HIGH LEVEL ROAD AND REINFORCED PRECAST CONCRETE BALUSTRADE

HOSE-MADE CORE FOR MOLDING CONCRETE

NON-INFLAMMABLE PANEL

RETAINING WALL CONSTRUCTION METHOD USING BLOCK

PLASMA MELTING METHOD FOR ACTIVE METAL