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
Telegraph system
摘要
申请公布号
US2237498(A)
申请公布日期
1941.04.08
申请号
US19390310649
申请日期
1939.12.22
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
NEISWINTER JAMES T.
分类号
H04L25/20
主分类号
H04L25/20
代理机构
代理人
主权项
地址
您可能感兴趣的专利
INTEGRATED CIRCUITS
METHOD AND APPARATUS FOR UNWRAPPING OBJECTS
METHOD FOR REMOVING AMMONIA AND/OR AMINES FROM A GAS CONTAINING THE SAME
METHOD OF PREPARING GAS SENSOR ELEMENTS AND SENSOR ELEMENTS AND SENSOR ELEMENTS PRODUCED THEREBY
PHOTOGRAPHIC ZOOM LENS SYSTEM
THERMAL CRACKING OF HYDROCARBONS
PROCESSING CIRCUIT FOR TELEVISION SIGNALS
LIQUID APPLICATOR DEVICE
DRAINAGE INSPECTION CHAMBERS
Fluidisable bed combustion chamber
BANDAGING MATERIAL FOR PRODUCING A SUPPORTING BANDAGE
Coil Band Severing and Disposal Apparatus
KERAMISKT YTBELAGDA STRUKTURER OCH SETT ATT TILLVERKA DESSA
FORFARINGSSETT FOR FRAMSTELLNING AV EN CELLSKUMKROPP AV ETT VINYLKLORIDBASERAT HARTS
STEEKSLOT.
SKARV FOR BETONGPALAR
PROCEDIMENTO PER LA PREPARAZIONE DI 2-AMMINO-4-PICOLIN TIOSA-LICILATO EPRODOTTO OTTENUTO
COIN CHECKING APPARATUS
Lintels
ARTICULABLE ARMS