Improvements in or relating to telephone instruments,申请号GB19460023187-传众专利搜索

Sand trap for purifying waste water has inlet for waste water at right angles to separating tank and near its top, air jets along base of tank and trough for collecting sand along tank below these

Katalysator zur Abgaskontrolle für Dieselmotoren

Locking device for vehicle doors and flaps has at least part of surface of latch and locking element coated with wear-resistant anti-corrosive hard material

Topography control method of adhesive surface esp. for graphic display - comprises contacting micro=embossed pattern to adhesive layer, forming micro=replicated surface with adhesion interface between adhesive and substrate

Solar energy heat collection system has flow rate sensor separated from heat transport fluid medium by a partition

Computer temperature regulator integrated circuit has first signal output, ventilator speed pin and second signal output oscillator pin

Control process for a combustion engine has electromagnetically controlled two phase actuator with different flow values according to operating conditions

Operating method for a step-up chopper for increasing output voltage compared to input voltage uses a choke and a controlled switch element for turning a switching current on and off via the choke

Power amplifier arrangement e.g. for RF transmission device and mobile RF appliance, includes signal paths coupled by control device for activating and deactivating amplifiers

Walking trainer used as an active support for achieving mobility after injury and in specific illnesses comprises an adjustable support strap mounted on the upper part of a frame on rollers and connected to the rear side of a chest strap

Roller element (sic) including a body a supported roller which can rotate in the shaft, and which can be rotated around an axis useful for internal combustion engines and pumps

Photonic pressure drive mechanism for vehicles of every type like satellites, space ships or aircraft absorbs electromagnetic radiation from gamma rays, X-rays, lasers, light or microwaves

Coordinate measuring machine probe for thin plates has tip contact comprising three different size convex sapphire contact spheres

Cage for roller bearing, comprising bridges made of continuously cast profile cut to length for insertion

Vehicle external immobiliser has high-power microwave generator acting on vehicle electronic motor management system

Device for improving combustion properties of liquid, fluid or gaseous fuels has vortex member in processing chamber between inlet and outlet of housing and driven by fuel stream running through housing

Glass faade system for buildings has glass box fitted on outside of glass faade and with sliding window on room side and with off-set air inlets and outlets

Mixing device for oil or gas fan burner has burner tube with endface against surface on endface of support tube

Building block for e.g. children toys, has rods, which cross one another at angle and connected with one another at crossing point, and magnetic units and Ferro magnetic balls provided at ends of block and away from crossing point

发明名称	Improvements in or relating to telephone instruments
摘要
申请公布号	GB622120(A)	申请公布日期	1949.04.27
申请号	GB19460023187	申请日期	1946.08.03
申请人	AUTOMATIQUE ELECTRIQUE, S.A.	发明人
分类号	H04M1/02	主分类号	H04M1/02
代理机构		代理人
主权项
地址