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
Telephone system
摘要
申请公布号
US2096436(A)
申请公布日期
1937.10.19
申请号
US19350030800
申请日期
1935.07.11
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MASSONNCAU ROBERT F.
分类号
H04M15/10
主分类号
H04M15/10
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Holding device
Image display panel employing a broad-band polarizing/reflective backlighting structure and a pixelated array of reflective-type of filtering elements
Wiring method for a resin mold product
Structure for carrying scooter
Image processing apparatus, image processing method, and a computer-readable storage medium containing a computer program for image processing recorded thereon
Measuring device for measuring the mass of a medium flowing in a line
Solidification engine and thermal management system for electronics
Release resistant buckle cover
Sweat band with displayer
Malononitrile-derivative anion salts, and their uses as ionic conducting materials
Protein purification
Multi-channel or split-frequency, low frequency, telemetry circuit and method between transmitters and receivers
Lactic acid bacteria preparation having biopurification activity
Substrate for information recording disk, mold and stamper for injection molding substrate, and method for making stamper, and information recording disk
Cement compositions and methods for high temperature wells containing carbon dioxide
Insulation replacement electrical connector
Blower and method for molding housing thereof
Carrier mounting structure
Topical, non-cytotoxic, antimicrobial hydrogel with thixotropic properties
Polycarbonate resin coextruded article
