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 modulation system
摘要
申请公布号
US2218524(A)
申请公布日期
1940.10.22
申请号
US19400319877
申请日期
1940.02.20
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
CHAFFEE JOSEPH G.
分类号
H03C3/04;H03C3/09;H03C3/28
主分类号
H03C3/04
代理机构
代理人
主权项
地址
您可能感兴趣的专利
TOUCH PANEL WIRING FORMATION METHOD AND TOUCH PANEL
CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
THREE-TERMINAL OPTICAL SIGNAL CONTROL ELEMENT
COMPOSITION FOR IMPROVING ANTIFUNGAL PROPERTY AND LUBRICITY OF FUEL OIL
IMAGE FORMING APPARATUS, POST-PROCESSING DEVICE, AND IMAGE FORMATION SYSTEM
AIR CONDITIONING SYSTEM, CONTROL DEVICE FOR AIR CONDITIONER AND CONTROL METHOD FOR AIR CONDITIONER
SAFETY CAP DEVICE FOR RADIATOR PRESSURE CONTROL AND PRESSURE CONTROL METHOD FOR THE SAME
GATE STRUCTURE
SENSOR CONNECTION DEVICE FOR HOT WATER DISPENSER
IMAGE PROCESSOR AND PATTERN MATCHING METHOD
INFORMATION PROCESSING APPARATUS, DATA STORAGE SYSTEM, AND DATA STORAGE METHOD
SUBSTITUTE COLLECTION MACHINE
POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE
OPTICAL SCANNING DEVICE
BASIN AND METHOD OF MANUFACTURING THE SAME
PACKAGING BAG WITH FASTENER
DATA MISMATCH DETECTION DEVICE AND DATA MISMATCH DETECTION METHOD
CATALYST FOR OLEFIN POLYMERIZATION AND METHOD FOR OLEFIN POLYMERIZATION USING THE SAME
PEELING METHOD OF GLASS FILM
OIL PUMP
