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
Loudspeaking telephone instrument
摘要
申请公布号
US3027429(A)
申请公布日期
1962.03.27
申请号
US19570705382
申请日期
1957.12.26
申请人
SVENSKA RELAFABRIKEN ABN AB
发明人
EKLOV DAVID
分类号
H04M1/60;H04M9/08;H04M9/10
主分类号
H04M1/60
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Synergistic compositions for increasing flame resistance of polymers
Process for hardening microcapsules containing hydrophobic oil droplets
Rubber and polymer preservative
Chelating agents
Hydrocracking process
Process of making calcium hypochlorite
Centrifugal drier with purging device
Dry pickling method
Absorptive glass
Ignitor charcoal and method of manufacture thereof
Mounting structure
Tubular writing pen
Motion picture camera
Fiber optic transmission line
Door lock
Clamping apparatus
Hermetically sealed valve with fixed diffuser
Manifold imaging member and process employing a metal soap
Crane cable attachment
Magnifying lens holder assembly
