Power line carrier telephone system,申请号US19290384928-传众专利搜索

首页产品黄页商标征信

会员服务注册登录

法人/股东/高管

发明名称	Power line carrier telephone system
摘要
申请公布号	US1873255(A)	申请公布日期	1932.08.23
申请号	US19290384928	申请日期	1929.08.10
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	ARNOLD HENRY B.
分类号	H04B3/54	主分类号	H04B3/54
代理机构		代理人
主权项
地址

您可能感兴趣的专利

Easily fastenable crush-cutter holder

Device for passing a plurality of installation lines and pipes through a building wall

Circuit arrangement to indicate the earthing of a wire of a subscriber line when the earth key is pressed

Device for translational movement and swivelling of an object in space

Appliance for organ-tissue fixation

Hydraulic control device for the load-moment limit in a jib crane

Device on sliding microtomes for vertical guidance of the object holder

Converter for carrying a signal current

Method of making the type impressions indecipherable on film ink ribbons used only once in typewriters, comparable equipment and devices

Vacuum brake booster

Process and apparatus for milling saw teeth with a positive angle of rake in a metal strip, in particular in a bimetallic strip

Dental care composition

Attachment and operative appliance with liftable and horizontally extendable telescopic arm and remote-controlled head movable about all axes and having optics and equipment orientated to the task

키 폰(Key Phone)의 음성통화 제어회로

양전자방출 카메라시스템 및 그 촬영방법

가축용수탄기(水呑器)

스탬프를 이용한 화장방법 및 화장용 팔레트

텔레비젼 시청시의 시력보호장치

떡밥 포장용기