Improvements in portable sound reproducing instruments,申请号GB19300021581-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 portable sound reproducing instruments
摘要
申请公布号	GB338213(A)	申请公布日期	1930.11.17
申请号	GB19300021581	申请日期	1929.07.16
申请人	COLUMBIA GRAPHOPHONE COMPANY, LIMITED;FRANK ALLEN MITCHELL	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

您可能感兴趣的专利

AUTO-CENTERING LINEAR MOTOR

COBALT-DOPED SATURABLE ABSORBER Q-SWITCHES AND LASER SYSTEMS

ARC DISCHARGE LAMP GLASS FACEPLATE AND METHOD THEREFOR

IMPROVED DISPLAY DEVICE

SYSTEM AND METHOD FOR IMPLEMENTING A FLEXIBLE INTERRUPT MECHANISM

METHOD AND APPARATUS FOR ADJUSTED DC OFFSET POTENTIAL IN A LIQUID CRYSTAL DISPLAY (LCD) DEVICE

PRE-mRNA SPLICING SCREENING ASSAY

TANDEM MICROCHANNEL PLATE AND SOLID STATE ELECTRON DETECTOR

MANIPULATION DEVICE FOR DISPLACING OBJECTS

METHODS OF MODULATING ANGIOGENESIS

A METHOD AND COMPUTER SYSTEM FOR CONSTRUCTING REFERENCES TO VIRTUAL DATA

CAR RADIO WITH INTEGRATED COMMUNICATION TERMINAL AND CORRESPONDING PORTABLE COMMUNICATION TERMINAL

FIRE-EXTINGUISHING AGENT AND IMPREGNANT MATERIAL

VENTILATED, CONTAINERISED SERVICE STATION WITH IMPROVED SAFETY

METHOD AND DEVICE FOR PRODUCING PARTS HAVING A SEALING LAYER ON THE SURFACE, AND CORRESPONDING PARTS

A METHOD AND ELECTRONIC CIRCUIT FOR DETECTING AN ALTERNATING CURRENT COMPONENT

A SECURITY DEVICE USEFUL FOR PHYSICALLY SECURING DIGITAL DATA STORAGE MEDIA, AND A METHOD OF USE THEREOF

REAL-TIME MONITORING ASSESSMENT, ANALYSIS, RETRIEVAL, AND STORAGE OF PHYSIOLOGICAL DATA