Circuit arrangement for telephone systems,申请号US19350049054-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	Circuit arrangement for telephone systems
摘要
申请公布号	US2157927(A)	申请公布日期	1939.05.09
申请号	US19350049054	申请日期	1935.11.09
申请人	SIEMENS BROTHERS & COMPANY LIMITED	发明人	SUTTON GEORGE WILLIAM
分类号	H04R3/00	主分类号	H04R3/00
代理机构		代理人
主权项
地址

您可能感兴趣的专利

LIPASE RICH ENZYME PREPARATIONS FROM PANCREATIC TISSUE

ION TRANSPORT GEL

FORFARANDE FOR FRAMSTELLNING AV TEREFTALSYRA

ELEKTRONISCHE STEUERUNG FUER ELEKTRONISCHE BRENNSTOFFEINSPRITZVORRICHTUNGEN VON VERBRENNUNGSMOTOREN

RADIALSTIRNFLAECHENDICHTUNG

FIBRE-REINFORCED POLYMERIC SHEET

USING SPARE CAPACITY OF CONTROL UNITS OF DATA PROCESSOR IN EVENT OF BREAKDOWN

AIR FIBERIZATION OF MINERAL FIBER

PHOTOELECTRIC ANALYSIS USING LUMINOUS BACTERIA

TRANSPORT TRAILER

METHOD OF APPARATUS FOR CHANGING SEWAGE SLUDGE TO MANURE

GASSLIQUID CONTACTING APPARATUS

POROUS REFRACTORY MATERIAL PRODUCT HAVING PROTECTION COATING LAYER

PRODUCTION OF GLASS FIBER FOR LIGHT TRANSMISSION

SUPERSONIC FLOWMETER

OBSERVING DEVICE FOR COMBUSTION CHAMBER OF INTERNAL COMBUSTION ENGINE