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 or relating to telephone bell ringing circuits
摘要
申请公布号
GB850861(A)
申请公布日期
1960.10.12
申请号
GB19550032547
申请日期
1955.11.14
申请人
HER MAJESTY'S POSTMASTER GENERAL
发明人
FLOWERS THOMAS HAROLD;BARKER ROBERT CHARLES
分类号
H04M19/02
主分类号
H04M19/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
FUSION PROTEINS, CONJUNCTION WITH PROTEINS FROM RESPIRATORY SYNCYTIAL VIRUS
TRANSMITTING ACCOUNTING AND BILLING INFORMATION TO MOBILE STATION
METHOD OF GROWING ENTERIC BACTERIA WITH ENHANCED IMMUNOGENICITY
A COMPOUND COMPRISING A MARKER OR A THERAPEUTIC AGENT LINKED TO A LIGAND CONTAINING AMINO ACIDS WHEREIN THE MARKER OR AGENT IS CLEAVED FROM THE LIGAND TO PERMIT ENTRY INTO THE CELL OF THE MARKER OR AGENT, MEDICAMENTS FOR TREATING TUMOURS; DIAGNOSTIC DEVICES
HYBRID ANTIBODY-TOXIN CONJUGATE AND ANTIBODIES TO INSECT GUT
PROCESS FOR THE PREPARATION OF FIBER-FILLED THERMOPLASTIC RESIN COMPOSITION
PROCESSES AND INTERMEDIATES FOR PREPARING 3-(1-PIPERAZINYL)-1,2-BENZISOTHIAZOLE
RETINOIDS AND METHODS OF USE OF SAME
PIPERAZINE-2,5-DIONE DERIVATIVES AND THEIR USE AS MEDICAMENTS
NEW EXOCELLULAR POLYSACCHARIDE PRODUCED BY STREPTOCOCCUS THERMOPHILUS INTENDED TO INHIBIT BETA-GALACTOSIDE SPECIFIC LECTINS
PROCESS FOR TRANSFORMING IMAGES INTO STEREOSCOPIC IMAGES, IMAGES AND IMAGE SERIES OBTAINED BY THIS PROCESS
Lüfter zum Anbau an ein Wandelement eines Schaltschrankes
APPARATUS FOR MEASURING TEMPERATURE INSIDE REACTORS
POSITIVE-NEGATIVE SELECTION FOR HOMOLOGOUS RECOMBINATION
NOVEL ANTIFUNGAL COMPOUNDS
VESICULAR AMINO ACID TRANSPORTER COMPOSITION AND METHOD
A METHOD AND APPARATUS FOR IMPROVING THE UTILITY OF SPEECH RECOGNITION
COMPOSITION CONTAINING METHYL SALICYLATE AND/OR ETHYL SALICYLATE OPTIONALLY WITH EUGENOL AND/OR ISOEUGENOL, USE OF THE COMPOSITION IN A METHOD OF SEDATING, ANAESTHETISING AND EUTHANISING AQUATIC ORGANISMS
TORSO WARMER FOR A BUOYANCY COMPENSATOR COMPRISING LOOP ATTACHING MEANS
INK COMPOSITION HAVING A SHEAR INDEX GREATER THAN 0.6
