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
Electric signaling
摘要
申请公布号
US2348131(A)
申请公布日期
1944.05.02
申请号
US19420448732
申请日期
1942.06.27
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
JR. ARTHUR W. HORTON,
分类号
H04M3/64
主分类号
H04M3/64
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD FOR PRODUCING OLEFIN POLYMER
METHOD FOR MANUFACTURING OF SUPPLEMENTARY CEMENTITIOUS MATERIALS (SCMS)
BLIND DECODING
USE OF CENTRIFUGATION-AIDED INFECTION TO INCREASE VIRUS TITER
PIPE JOINT AND METHOD FOR FORMING THE PIPE JOINT
METHOD FOR TREATING GYNECOLOGICAL DISEASES
METHOD FOR CONTROLLING INFORMATION APPARATUS AND PROGRAM
FUNCTIONALIZED POLYAMINES FOR CLAY MITIGATION
PALLET CONTAINER
INHIBITORS OF BETA-SECRETASE
NON-AQUEOUS LIQUID COMPOSITION
THERMOPLASTIC ELASTOMERS VIA ATOM TRANSFER RADICAL POLYMERIZATION OF PLANT OIL
FORMATION AND IMMOBILIZATION OF SMALL PARTICLES BY USING POLYELECTROLYTE MULTILAYERS
COMPOSITE FAN CONTAINMENT CASE ASSEMBLY
NOVEL HETEROARYLAMIDE DERIVATIVES HAVING ANTIANDROGENIC PROPERTIES
POLISHING COMPOSITION, MANUFACTURING PROCESS THEREFOR, UNDILUTED LIQUID, PROCESS FOR PRODUCING SILICON SUBSTRATE, AND SILICON SUBSTRATE
METHOD OF CONVERTING STEAM TURBINE - POWERED LNG CARRIERS
ORAL ADMINISTRABLE PHARMACEUTICAL COMPOSITION
METHOD OF MAKING CONTACT LENSES WITH IDENTIFYING MARK
Method and Apparatus for Upgrading a Plug-in Based on anInstant Messaging Application
