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 dispositifs vibrants électro-magnétiques tels, par exemple, que les pick-ups de machines parlantes
摘要
申请公布号
FR707947(A)
申请公布日期
1931.07.16
申请号
FRD707947
申请日期
1930.12.18
申请人
THE GRAMOPHONE COMPANY LIMITED
发明人
分类号
H04R11/08
主分类号
H04R11/08
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD FOR EVALUATING AN OPTIMAL DOSAGE OF DEFOAMERS IN A FERMENTATION PROCESS
METHOD FOR FORMING THIN FILM
A DEVICE FOR MULTI-REGIME CONTROL OF FOUR-PHASE STEP MOTOR
Objective lens for optical recording medium and optical pickup apparatus
TOOTHBRUSH WITH FOLDING TYPE TONGUE CLEANER
Biodegradable fibers and fabrics, and method for controlling their biodegradability
Data processing system having configurable components
Method and apparatus for treating a patient
Dental illumination device
Plant acaricidal compositions and method using same
Tunable optical device and optical system using the tunable optical device as coding filter
Article dispensing apparatus and method
Illumination system and projection system employing the same
Anti-hijacking system for airplanes and airports
Method programming and operating a wheelchair having tilt and recline functions
Semiconductor memory device and bit line sensing method thereof
Method and arrangement at a multiple cylinder four-stroke cycle internal combustion engine
MODULATING UREA DEGRADATION IN WINE YEAST
Wrong runway alert system and method
Print processing system and method with print job reprocessing
