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
Improvements in and relating to telephone instruments
摘要
申请公布号
GB349797(A)
申请公布日期
1931.06.04
申请号
GB19300018272
申请日期
1930.06.14
申请人
SIEMENS BROTHERS & CO., LIMITED;EDMUND ANTHONY FORCEVILLE
发明人
分类号
H04M1/02
主分类号
H04M1/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
VEGETATION METHOD FOR EDGE OF BULKHEAD
MODIFIED POLYESTER FIBER AND ITS PRODUCTION
BRASSIERE
HYDROTROPIC AGENT AND THICKENED BLEACHING DETERGENT CONTAINING SAME
THERMAL CRACKING FURNACE OF ETHYLENE WITH SUPER HIGH YIELD
WIG
PANTIES
HARD ALLOY AND ITS PRODUCTION
STEELMAKING METHOD IN CONVERTER USING COAL
PREPARATION OF COMPOSITION FOR COLOR DEVELOPING LAYER FOR CHROMIC ELEMENT
ANISOTROPIC CONDUCTIVE ADHESIVE
ADHESIVE SOLUTION FOR TRANSFER PAPER FOR POTTERY
PRIMER RESIN COMPOSITION
THERMOPLASTIC RESIN COMPOSITION
MOISTURE CURING TYPE ONE PACK POLYURETHANE RESIN SEALING MATERIAL COMPOSITION AND ITS PRODUCTION
EPOXY RESIN COMPOSITION FOR SEALING SEMICONDUCTOR, AND SEMICONDUCTOR DEVICE MADE BY USING THE SAME
THERMOPLASTIC RESIN COMPOSITION
DIELECTRIC LAYER-FORMING RESIN COMPOSITION AND DIELECTRIC LAYER-FORMING FILM
CUTOFF SEALING MATERIAL
PRODUCTION OF LACTIDE IN ORGANIC SOLVENT