Improvements in or relating to loudspeakers and like electro-acoustic transducers,申请号GB19460015072-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 or relating to loudspeakers and like electro-acoustic transducers
摘要
申请公布号	GB622828(A)	申请公布日期	1949.05.09
申请号	GB19460015072	申请日期	1947.05.16
申请人	DONALD SIMPSON ROBSON	发明人
分类号	H04R9/06	主分类号	H04R9/06
代理机构		代理人
主权项
地址

您可能感兴趣的专利

HEAT GENERATING DEVICE UTILIZING CONTACT REACTION

TILE WITH BACK FEET AND ITS PRODUCTION

TERMINAL EQUIPMENT

PRODUCTION OF PHOTOMASK

SCAVENGER FOR SEWAGE CONDUIT AND THE LIKE

DISPOSABLE ABSORBABLE UNDERWEAR

WASHING TOOL FOR COOLING COIL OF DISPENSER FOR CARBONATED BEVERAGE SUCH AS DRAFT BEER

DISPLAY PROCESSING METHOD

SOUND RECORDING DEVICE WITH TIMER

ELECTRONIC TYPEWRITER

POWER SUPPLY CONTROL CIRCUIT

READING BOARD INTERLOCKED WITH KEYBOARD INPUT DEVICE

POLYESTER DECORATIVE MATERIAL, MANUFACTURE THEREOF AND PRODUCTION UNIT

PULSE GENERATING CIRCUIT

AREA MODULATION RECORDING HEAD

ROLLED PRODUCT OF POLYESTER FILM

MULTIPLUNGER TYPE RESIN MOLDING DEVICE

PLASTIC MAGNET INJECTION MOLDING MACHINE

IGNITION TIMING SENSOR FOR INTERNAL COMBUSTION ENGINE

COMPLEMENTARY INSULATED GATE FIELD EFFECT TRANSISTOR INTEGRATED CIRCUIT AND MANUFACTURE THEREOF