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
APARELHO PORTAIL PARA INTERCOMUNICACAO,DESTINADO A SURDOS E/OU MUDOS
摘要
申请公布号
BR7507713(A)
申请公布日期
1977.06.14
申请号
BR19750007713
申请日期
1975.11.20
申请人
ABREU D
发明人
ABREU D
分类号
A61F11/04;G09B21/04;H04R25/00;(IPC1-7):G09B21/04
主分类号
A61F11/04
代理机构
代理人
主权项
地址
您可能感兴趣的专利
GASAANDINGSUDSTYR
STRUCTURE OF MORTUARY MONUMENT ETC*
FORFARANDE OCH BEHALLARE FOR PNEUMATISK BLANDNING AV PULVERFORMIGT ELLER KORNIGT GODS
PREPARATION OF METHACRYLATE
PREPARATION OF METHACRYLATE
PREPARATION OF ETHYLAMINE
RECORDING SHEET
HYDROFORMING METHOD USING RHODIUM BASE CATALYST CONTAINING COORDINATE HAVING ELECTRICALLY NEGATIVE SUBSTITUTE GROUP
NOVEL ANTIBIOTICS AND ITS PREPARATION
NEW PHYSIOLOGICALLY ACTIVE SUBSTANCE
CARPET PRODUCING METHOD
THERMAL DECOMPOSITION METHOD OH LIGHT HYDROCARBON
POLYMERIZABLE PORPHYRIN DERIVATIVE AND POLYMERS THEREFROM
PREPARATION OF 22*44ISO BUTYLPHENYL**PROPIONIC ACID
PENTADIENONE HYDRAZONE AND PESTICIDAL METHOD USING SAME
NITRO COMPOUNDS
PADDING AND CREPE REMOVING METHOD
DYEING OF SYNTHETIC FIBER MATERIAL FROM ORGANIC SOLVENT
BULKINESS CRIMPING AND PROCESSING APPARATUS
SPUN YARN LIKE SLIVER AND PRODUCTION THEREOF
