GB9104707D0 - Portable radio telephone - Google Patents

Portable radio telephone

Info

Publication number
GB9104707D0
GB9104707D0 GB919104707A GB9104707A GB9104707D0 GB 9104707 D0 GB9104707 D0 GB 9104707D0 GB 919104707 A GB919104707 A GB 919104707A GB 9104707 A GB9104707 A GB 9104707A GB 9104707 D0 GB9104707 D0 GB 9104707D0
Authority
GB
United Kingdom
Prior art keywords
radio telephone
portable radio
telephone
portable
radio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB919104707A
Other versions
GB2253541A (en
GB2253541B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Mobile Phones UK Ltd
Original Assignee
Technophone Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technophone Ltd filed Critical Technophone Ltd
Priority to GB9104707A priority Critical patent/GB2253541B/en
Publication of GB9104707D0 publication Critical patent/GB9104707D0/en
Priority to EP92301119A priority patent/EP0502617B1/en
Priority to DE69225084T priority patent/DE69225084T2/en
Priority to JP04743292A priority patent/JP3234620B2/en
Publication of GB2253541A publication Critical patent/GB2253541A/en
Priority to US08/158,182 priority patent/US5703931A/en
Application granted granted Critical
Publication of GB2253541B publication Critical patent/GB2253541B/en
Priority to US08/861,780 priority patent/US5924046A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
GB9104707A 1991-03-06 1991-03-06 Portable radio telephone Expired - Lifetime GB2253541B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB9104707A GB2253541B (en) 1991-03-06 1991-03-06 Portable radio telephone
EP92301119A EP0502617B1 (en) 1991-03-06 1992-02-11 Portable telephone
DE69225084T DE69225084T2 (en) 1991-03-06 1992-02-11 Portable phone
JP04743292A JP3234620B2 (en) 1991-03-06 1992-03-05 Portable wireless telephone
US08/158,182 US5703931A (en) 1991-03-06 1993-11-24 Portable radio telephone with impulse movement or sound off-hook production and signalling
US08/861,780 US5924046A (en) 1991-03-06 1997-05-22 Portable radio telephone with sound off-hook production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9104707A GB2253541B (en) 1991-03-06 1991-03-06 Portable radio telephone

Publications (3)

Publication Number Publication Date
GB9104707D0 true GB9104707D0 (en) 1991-04-17
GB2253541A GB2253541A (en) 1992-09-09
GB2253541B GB2253541B (en) 1996-08-14

Family

ID=10691074

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9104707A Expired - Lifetime GB2253541B (en) 1991-03-06 1991-03-06 Portable radio telephone

Country Status (1)

Country Link
GB (1) GB2253541B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9724432D0 (en) * 1997-11-20 1998-01-14 Radio Design Limited Cellular radio telephone
JP2001237921A (en) * 2000-02-24 2001-08-31 Nec Saitama Ltd Portable telephone set
US7027840B2 (en) * 2003-09-17 2006-04-11 Motorola, Inc. Method and apparatus of muting an alert

Also Published As

Publication number Publication date
GB2253541A (en) 1992-09-09
GB2253541B (en) 1996-08-14

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Legal Events

Date Code Title Description
718D Proc. under sect. 18(4) pat. act 1977
718D Proc. under sect. 18(4) pat. act 1977
PE20 Patent expired after termination of 20 years

Expiry date: 20110305