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
Circuit for controlling signal transmission in two-way signaling systems
摘要
申请公布号
US2117708(A)
申请公布日期
1938.05.17
申请号
US19360086758
申请日期
1936.06.23
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
DAVIS KINGSBURY H.
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
RADIATION GENERATOR
LIQUID DRUG FEEDER
APPARATUS FOR FOLDING WING
FIXED PRESSURE LIQUID CHEMICAL INJECTING PUMP
CLAMP
DIALYSIS MEMBRANE FOR BLOOD DIALYSIS
CORNEAL-AREA PHOTOGRAPH POSITION DISPLAY METHOD FOR CORNEAL-CELL PHOTOGRAPHING APPARATUS
FAR INFRARED-RAY COOKER
CONTACT HEATING APPLIANCE
MICROCOMPUTER-CONTROLLED COOKER
RICE COOKER
MAILBOX
STRUCTURE FOR CONNECTING COUNTER TOP
UMBRELLA
RAISING SEEDLING DEVICE
PLANTING DEVICE FOR RICE TRANSPLANTER
DYNAMICALLY SELECTABLE MULTIMODE PULSE WIDTH MODULATION SYSTEM.
HIGH TEMPERATURE PLASMA GUN ASSEMBLY.
Transceiver circuit for an integrated circuit.
Miniature potentiometer and process of automatic sequential production thereof.