Improvements in toll telephone systems,申请号GB19290035477-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 toll telephone systems
摘要
申请公布号	GB343518(A)	申请公布日期	1931.02.20
申请号	GB19290035477	申请日期	1929.11.20
申请人	JOHANNES PIETER VFRLOOY	发明人
分类号	H04M15/08	主分类号	H04M15/08
代理机构		代理人
主权项
地址

您可能感兴趣的专利

PHARMACEUTICAL COMPOSITIONS CONTAINING WATER-SOLUBLE PRODRUGS OF PROPOFOL AND METHODS OF ADMINISTERING SAME.

RETARDATION OF DISCOLOURATION OF DICARBOXYLIC ACIDS.

COMPOSITE STRIP WINDABLE TO FORM A HELICAL PIPE AND METHOD THEREOF.

METHOD OF ROLL GRINDING.

REAL-TIME TIERED RATING OF COMMUNICATION SERVICES.

SCRUBBING CLOSURE.

SYSTEM AND METHOD FOR PUSHING DATA TO A MOBILE DEVICE.

DEVICE FOR MIXING AND/OR INJECTING CEMENTS.

NOVEL AMINOTRIAZOLONE COMPOUNDS, METHOD FOR PREPARING SAME AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME.

BENZOTHIADIAZEPINE DERIVATIVES, PROCESSES FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM.

BENZOPYRAN DERIVATIVES SUBSTITUTED WITH SECONDARY AMINES INCLUDING TETRAZOLE, METHOD FOR THE PREPARATION THEREOF AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM.

BODY FLUID FLOW CONTROL METHOD AND DEVICE.

SAMPLE COLLECTION AND TESTING SYSTEM.

GRID CONSTRUCTION FOR A FLUIDIZED BED REACTOR AND A METHOD OF REMOVING COARSE MATERIAL FROM A FLUIDIZED BED REACTOR.

A DISPENSER FOR DISPENSING SHEET MATERIAL.

HIGH DENSITY FIBER DISTRIBUTION TRAY SYSTEM.

PHARMACEUTICAL PREPARATION FOR THE TREATMENT AND DIAGNOSIS OF TUMORS AND METHOD FOR THE PREPARATION OF THE LIPID FREE FRACTION OF BLOOD PLASMA.

PARENTAL CONTROL CHANNEL LIST TRACKING.

CORK COVERED BODY AND METHOD OF MANUFACTURING THE CORK COVERED BODY