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
Telephone systems
摘要
申请公布号
US2935570(A)
申请公布日期
1960.05.03
申请号
US19550541005
申请日期
1955.10.17
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
SLADEK ROBERT B.
分类号
H01H67/06;H04Q3/00
主分类号
H01H67/06
代理机构
代理人
主权项
地址
您可能感兴趣的专利
(A) ;MUFFLER DRAIN STRUCTURE
(A) ;REMAINING CORE HANDLING DEVICE FOR PRINTING MACHINE
Variable frequency current control device for discharge lamps
Device for ascertaining alignment errors in shafts arranged in tandem
Biuret purification
Fiber-reactive disazo brown dye having vinylsulfone-type reactive group
Method for measurement of gas concentration
Photosensitive member having an amorphous silicon layer
Electrophotographic imaging members having a ground plane of hydrogenated amorphous silicon
De-entrainment chimney and method of operation
Cationic, advanced epoxy resin compositions
Water-in-oil type emulsion explosives
Apparatus for producing mineral fibres from molten silicate by blast drawing
Dirhenium metathesis catalysts
Process for forming positive tonable images using a photosensitive material containing at least 1,4-dihydropyridine
Process for extruding dough as used in producing crisp breads
Device for sensing an oxygen concentration in gaseous body with a source of pump current for an oxygen pump element
Process for producing, by continuous annealing, soft blackplate for surface treatment
Vessel mooring system and method for its installation
Connecting blocks
