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
Sound collecting system
摘要
申请公布号
US2216949(A)
申请公布日期
1940.10.08
申请号
US19370182720
申请日期
1937.12.31
申请人
RADIO CORPORATION OF AMERICA
发明人
KELLOGG EDWARD W.
分类号
G10K11/28;H04R1/34
主分类号
G10K11/28
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD AND APPARATUS OF LOW STRENGH ELECTRIC FIELD NETWORK-MEDIATED DELIVERY OF DRUG, GENE, SIRNA, SHRN, PROTEIN, PEPTIDE, ANTIBODY OR OTHER BIOMEDICAL AND THERAPEUTIC MOLECULES AND REAGENTS IN SKIN, SOFT TISSUE, JOINTS AND BONE
Connector device for cards permitting insertion of different types of cards
PENT ROOF UNITS AND PENT ROOF COMPRISING THEM
CAR WINDSHIELD FROST APPARATUS FOR REMOVING USING THE INFRARED SENSOR
SINGLE INPUT DIFFERENTIAL OUTPUT TYPE AMPLIFIER FOR MULTI-BAND
METHOD FOR SETTING A GAMMA-REGISTOR AND APPARATUS FOR PERFORMING THE SAME
HUMAN BODY TEMPERATURE CONTROL APPARATUS
TOY HAMMER WITH CUSHION
METHOD OF INTERNET PROTOCOL(IP) MESSAGE TRANSMISSION, NEGOTIATED BANDWIDTH SAVING CAPABILITY AND SAVING NETWORK BANDWIDTH
LED LIGHTING EQUIPMENT HAVING MAIN-ILLUMINATION AND COLOR CONTROL TYPE SUB-ILLUMINATION
Ionization detector of environmental scanning electron microscope
FOUL AND WASTE WATER TREATING APPARATUS USING REACTION VESSEL HAVING FLOATING AND FIXED CARRIER
SPIN-PILE WITH SOCKET CONNECTOR
METHOD TO MANUFACTURE RECEPTACLE COUNTERACTING OR REMOVING VIRULENCE OF BUILDINGS
APPARATUS AND METHOD FOR INTER EXCHANGE UNIT RELAY CALL PROCESS OF ISDN USER PART IN TELEPHONE EXCHANGE
Product made of fibrous composite
Sterilizer
Automatic sun blind for a motor vehicle
Method for storing and monitoring data transmitted in a digital wireless network
Elektromagnetisk kartlegging