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
Apparat til Forstærkning af audiofrekvente Strømme.
摘要
申请公布号
DK46935(C)
申请公布日期
1933.02.13
申请号
DKD46935
申请日期
1930.07.05
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Continuous fractional crystallization process
Method of embossing sheet metal
Check valves
Engine controls
Demetallization of heavy petroleum oils
Recording mechanism
Flow divider for dual-orifice fuel injection nozzle
Foldable supporting structure
Altitude correction techniques
High speed clutch and brake actuating circuit
Data transmitting apparatus employing switches and diodes to selectively transmit pulses of desired polarity
Seismic prospecting system
Magnet circuit control
Fusible circuit protective device
Circuits for transmitting input pulses of any polarity as output pulses having a given constant polarity
Leak detecting and indicating mechanism for hydraulic lines
Printing telegraph systems
Method of improving the storage properties of alkaline detergent compositions
Magnetic materials
Regenerative reforming process