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
Perfectionnements aux appareils reproducteurs de sons
摘要
申请公布号
FR699474(A)
申请公布日期
1931.02.16
申请号
FRD699474
申请日期
1929.10.24
申请人
SOCIETE DES ETABLISSEMENTS GAUMONT
发明人
分类号
H04R3/04
主分类号
H04R3/04
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Microfluidic dispensing assembly
Card dispensing apparatuses and associated methods of operation
Drink vessel holder
Ceramic water purification device
Reclosable one time security trap seal blister package
Remote control for braking system of progressive cavity pump
Bicycle transmission system
Wellbore bypass tool and related methods of use
Vertical hung window shade assembly with roll up and side shifting dual panel or panels
Pneumatic tire with asymmetric tread pattern
Catalyst loading system
Automatic acid filling apparatus
Water play installation
System for downloading real-time interaction data through mobile and broadcast converged networks and method thereof
Systems and methods for analyzing dynamic dental occlusions and making dental appliances
Semiconductor device and manufacturing method thereof
Terminal having illumination and exposure control
Technique for analyzing a reflective photo-mask
Three-dimensional thin-film semiconductor substrate with through-holes and methods of manufacturing
Simplified method of predicting a time-dependent response of a component of a system to an input into the system
