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 téléphoniques suppresseurs d'écho
摘要
申请公布号
FR994987(A)
申请公布日期
1951.11.26
申请号
FRD994987
申请日期
1949.07.12
申请人
SOCIETE FRANCAISE RADIO-ELECTRIQUE AFRIQUE
发明人
分类号
H04B3/20
主分类号
H04B3/20
代理机构
代理人
主权项
地址
您可能感兴趣的专利
VEHICLE SUCH AS AUTOMOBILE, MOTOR-SCOOTER OR MOTORCYCLE
CONTINUOUS WORKING METHOD OF EXTRUDING MATERIAL AND DEVICE THEREFOR
ELECTRIC VISCOUS FLUID SEALING-TYPE MOUNT
ARTICLE DELIVERING METHOD
OPTICAL ELEMENT AND ITS MOLDING METHOD, AND LASER SCANNING OPTICAL SYSTEM
INJECTION MOLDING METHOD
TONER FIXING ROLL AND PRODUCTION THEREOF
FOAM
BLOW MOLDING DIE
METHOD OF DETECTING ABNORMAL INJECTION MOLDING PROCESS
PRODUCTION OF P-HYDROXYBENZOIC ACID BY IMMOBILIZED MICROORGANISM
X-Y STAGE
COATING, INK COMPOSITION
IMPACT ABSORBING STRUCTURE FOR AUTOMOBILE
INK JET RECORDER
RECORDER AND METHOD FOR DETECTING RESIDUAL QUANTITY OF INK
FLUOROPLASTIC FILM LAMINATED STEEL PANEL
MUFFLING HOSE FOR AIR INTAKE SYSTEM OF INTERNAL COMBUSTION ENGINE
TRACTION CONTROL CONTROLLING DEVICE FOR VEHICLE
LATERAL DRIVING FORCE DISTRIBUTION ADJUSTING DEVICE FOR VEHICLE
