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
Frequency selective system
摘要
申请公布号
US2009370(A)
申请公布日期
1935.07.23
申请号
US19310522210
申请日期
1931.03.13
申请人
RADIO CORPORATION OF AMERICA
发明人
HANSELL CLARENCE W.;FINCH JAMES L.
分类号
E01B11/04;H03B5/18;H04B1/16
主分类号
E01B11/04
代理机构
代理人
主权项
地址
您可能感兴趣的专利
PHOSPHATE EMULSIFIERS
ENGINE AIR/FUEL RATIO SENSING DEVICE
FUEL INJECTION DEVICE WITH INJECTION TIMING CONTROL FOR AIR-COMPRESSING, SELF-IGNITING ENGINES
PROCESS OF MANUFACTURING A LENGTHWISE IMPERVIOUS CABLE
PROCESS FOR THE PREPARATION OF CARBOXYLIC-ACID DIESTERS OF POLYBUTYLENE OXIDE-POLYALKYLENE OXIDE GLYCOLS
LOW-TRANS FATS AND OIL- AND WATER EMULSION SPREADS CONTAINING SUCH FATS
GAUGE FOR MEASURING THE LOCAL VOID FRACTION OF A DUAL-PHASE EMULSION
METHOD AND DEVICE FOR DETECTING DAMAGE TO BURIED OBJECT.
IMPROVED POLYAMIDE-ACIDS AND POLYIMIDES.
TRANSPORTING SOLID/LIQUID GOODS
DIPHENYLSULFIDE DERIVATIVES
CONNECTOR FOR AN OPTICAL FIBER
HIGH SPEED DIODE
DEVICE FOR DEVIATING A SHEET-LIKE MATERIAL TRANSPORTED IN A PLANE
IMPROVED PORTLAND CEMENT, PROCESS FOR PREPARING SAME, AND COMPOSITIONS CONTAINING SAME
RECTAL PREPARATIONS CONTAINING INDOMETHACIN
COMBINED REFRIGERATION AND HEATING CIRCUITS
RESISTANCE THERMOMETER
PLANT FOR ELIMINATING INFILTRATED WATER AND PUTRID GAS FROM LANDFILLS
REMOVABLE LATCH
