EP0335558A3

Radio communication system

Abstract

A cellular or similar radio system measures the propagation time for signals to be transmitted between a mobile unit and at least two base stations, thereby obtaining two range measurements. This is used in a triangulation process to estimate the position of the mobile unit.

EP0335558A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 21 March 2009, 17.5 years ago.

1 sheet

Sheet 1

Every citation, both ways

Citations
Document	Relation	Office	Category	Cited during
EP0141994A1	Cites	European Patent Office (EPO)	A	Search report
EP0241565A1	Cites	European Patent Office (EPO)	X	Search report
EP0320913A2	Cites	European Patent Office (EPO)	E	Search report
EP0367935A2	Cites	European Patent Office (EPO)	E	Search report
US3714650A	Cites	United States of America	X	Search report
US4229737A	Cites	United States of America	A	Search report
US4791572A	Cites	United States of America	AP	Search report
WO8801061A1	Cites	World Intellectual Property Organization (WIPO)	X	Search report

9 members in 6 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
8807286	United Kingdom	A	1988-03-26
8807286	United Kingdom	A	1988-03-26
8807286	United Kingdom	–	1988-03-26
GB19880007286	–	–	–

Members9

Family members, oldest first
Document	Office	Kind
NO891255D0	Norway	D0	1989-03-22
FI891413A0	Finland	A0	1989-03-23
FI891413A	Finland	A	1989-09-27
GB2215932A	United Kingdom	A	1989-09-27
NO891255L	Norway	L	1989-09-27
AU3168789A	Australia	A	1989-09-28
EP0335558A2	European Patent Office (EPO)	A2	1989-10-04
JPH01298820A	Japan	A	1989-12-01
EP0335558A3This record	European Patent Office (EPO)	A3	1991-03-20

6 legal events, as the office reported them to INPADOC

Over the term

Point at a mark for the event

Events

Legal events, newest first
	Event	Code
1992-03-25	Application deemed to be withdrawnWithdrawn18D	18D
1992-02-06	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA
1991-03-20	Designated contracting statesAK	AK
1991-01-28	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL
1989-10-04	Designated contracting statesAK	AK
1989-08-19	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI