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
按键电话机呼叫装置之改良
摘要
申请公布号
TW032587
申请公布日期
1980.09.01
申请号
TW06921416
申请日期
1980.03.27
申请人
华阳电机股份有限公司
发明人
林钦儒
分类号
H04M1/23;H04M1/26
主分类号
H04M1/23
代理机构
代理人
高学士 台北巿中山北路七段八十二巷十弄十八号
主权项
一种按键电话机呼叫装置之改良,其特征在,被 叫电路并不用话筒键接点作开关,而系于扩大 器电路前,设置一三极电晶体及一组分压电阻, 作为来电信号电流之电压开关者。
地址
台北巿西宁南路213号
您可能感兴趣的专利
METHOD OF PROLONGING CAN STABILITY OF PIGMENT
VAT DYE
POLYESTER RESIN COMPOSITION AND SLIDING MEMBER
COMPOSITE PARTICLE AND RUBBER COMPOSITION AND TIRE BLENDING THE SAME PARTICLE
ANTISTATIC AGENT FOR SYNTHETIC RESIN
AROMATIC POLYAMIDE RESIN AND COMPOSITION THEREOF
PRODUCTION OF FLAME-RETARDANT POLYESTER
HEAT-RESISTANT RESIN COMPOSITION
PRODUCTION OF VINYL POLYMER
REACTIVE DYE, ITS MANUFACTURING PROCESS AND APPLICATION
PRODUCTION OF WATER-ABSORBING FINE POLYMER PARTICLE
1ALPHA,3BETA,25-TRIHYDROXY-24-HOMOCHOLESTA-5,22- DIENE COMPOUND
PRODUCTION OF BIPHENYLTETRACARBOXYLIC ACID DIANHYDRIDE
PRODUCTION OF 4-SULFONAPHTHALIC ACID ANHYDRIDE
1,2,3-TRIAZOLE DERIVATIVE, ITS PRODUCTION, ITS INTERMEDIATE AND PEST CONTROL AGENT CONTAINING THE SAME AS ACTIVE INGREDIENT
NOVEL DIETHYLENETRIAMINE DERIVATIVE
CONTROLLING AGENT FOR DISEASE OF FISHES
HAIR COSMETIC
METHOD OF HYDROGENATING OLEFINICALLY UNSATURATED POLYMER AND HYDROGENATION CATALYST
ACETYLSALICYLOYL-L-CARNITINE AND PREPARATION THEREOF