首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
Improvements in or relating to loudspeakers
摘要
申请公布号
GB664812(A)
申请公布日期
1952.01.16
申请号
GB19470008666
申请日期
1947.03.31
申请人
KOLSTER BRANDES LIMITED
发明人
CHAPMAN ROGER;TRIER ROBERT HENRY
分类号
H04R9/02;H04R9/06
主分类号
H04R9/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD OF MANUFACTURING MULTIELECTRODE PRINTED VARISTOR
ENGINE ROOM FOR SMALLLTYPE VESSEL
LOW VACUUM TYPE ELECTRON BEAM WORKING APPARATUS
WELDING METHOD AND ITS DEVICE
METHOD OF PREVENTING EFFECT OF LEAKAGE OF MOLTEN METAL IN CONTINUOUS CASTING PLANT
PREPARATION OF AROMATIC THIOSULFONIC ACID SALT
UREA SYNTHESIS
STABLE ORGANIC PHOSPHORUS HERBICIDE COMPOSITION
REMOVING AGENT FOR SLIME
ELECTRIC WIRE CLAMP
ENCLOSED SWITCHBOARD
NUCLEAR POWER PLANT
BUTTONING DEVICE FOR WATCH
ELECTROMAGNETIC TYPE FLOW METER FOR LIQUID METAL
BELYSNINGSORGAN TIL BRUG VED ELEKTROGRAFISK REPRODUKTION
DISPLAYING METHOD FOR RIVER CONDITION
IMPROVED METHOD IN MEASUREMENT OF ENZYME IMMUNITY
DECK STRUCTURE FOR SEMIISUBMERGED TWINNHULL SHIP
POROUS PLUG FOR GAS BLOWING OF MOLTEN METAL VESSEL
UREA DERIVATIVE AND HERBICIDE COMPRISING IT AS ACTIVE INGREDIENT
