Improvements in or relating to intercommunication telephone systems,申请号GB19490023963-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	Improvements in or relating to intercommunication telephone systems
摘要
申请公布号	GB677911(A)	申请公布日期	1952.08.27
申请号	GB19490023963	申请日期	1949.09.16
申请人	EDGAR IVENS;MODERN TELEPHONES (GREAT BRITAIN) LIMITED	发明人	IVENS EDGAR;WALL HARRY GEORGE
分类号	H04M9/00	主分类号	H04M9/00
代理机构		代理人
主权项
地址

您可能感兴趣的专利

Storage quality-of-service control in distributed virtual infrastructure

Distribution of applications with a saved state

Distributed RAID over shared multi-queued storage devices

Offset-based congestion control in storage systems

Scroll bar with time details

Systems and methods for detecting and resolving liquid pump failures

Silicon photonics alignment tolerant vertical grating couplers

Firearm impingement system having adjustable gas block

Hose coupling with a separate sleeve and collar

Roof coating composition

Low pH colloidal silica compositions for application to concrete

Modular boat lift cover

Three-wheeled vehicles

Airbag for protection of multiple body regions

Compaction system for composite stringers

Mechanic's creeper

Sanitizing device, system and methods of use thereof

Using colored biocidal multi-layer structure

Clamping device