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
Perfectionnement apporté aux membranes de haut-parleurs
摘要
申请公布号
FR914374(A)
申请公布日期
1946.10.07
申请号
FRD914374
申请日期
1945.09.11
申请人
SOCIETE FRANCAISE DE RADIO-ELECTRICITE
发明人
分类号
H04R7/14
主分类号
H04R7/14
代理机构
代理人
主权项
地址
您可能感兴趣的专利
ULTRASCHALLSONDE MIT ISOLIERTER AÜSSERER KANÜLE
METHOD TO DEVELOP OIL DEPOSIT WITH GAS CAP (VARIANTS)
DEVICE FOR METERED CHEMICAL REAGENT SUPPLY
TOOL FOR LEVELING GUIDE STRIP FORMING
INTERNAL WASTE WATER SEWAGE STRUCTURE
CELLULOSE PRODUCTION PROCESS
FORMULATION FOR FINISHING CELLULOSE-CONTAINING TEXTILE MATERIALS
METHOD OF PRODUCTION OF MAGNESIUM BY ELECTROLYSIS OF THE FUSED SALTS ELECTROLYSIS
METHOD OF TREATMENT OF SURFACES OF FRICTION UNITS OF MACHINE ELEMENTS
STEEL
ARMORED-CARCASS DEFORMABLE ALUMINUM ALLOY
INITIAL BARRICADE PART
PSEUDO-RIMMING STEEL PRODUCTION METHOD
AIRCRAFT FLIGHT AUTOMATIC CONTROL SYSTEM
METHOD FOR STATIC-PULSE BROACHING OF OPENINGS
ENGINE CONNECTING ROD CLOSED FORMING METHOD
METHOD FOR TREATING PULMONARY TUBERCULOSIS PATIENTS
METHOD FOR TREATING PUERPERAL DISEASES IN COWS
METHOD FOR PREPARING ASPHALT-CONCRETE MIXTURE
DEVICE FOR LOADING SELF-PROPELLED VEHICLES ONTO RAILWAY FLAT CAR
