GB9023475D0 - A telephone call warning apparatus - Google Patents

A telephone call warning apparatus

Info

Publication number
GB9023475D0
GB9023475D0 GB909023475A GB9023475A GB9023475D0 GB 9023475 D0 GB9023475 D0 GB 9023475D0 GB 909023475 A GB909023475 A GB 909023475A GB 9023475 A GB9023475 A GB 9023475A GB 9023475 D0 GB9023475 D0 GB 9023475D0
Authority
GB
United Kingdom
Prior art keywords
telephone call
warning apparatus
call warning
telephone
warning
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.)
Withdrawn
Application number
GB909023475A
Other versions
GB2250659A (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.)
Marten Brian M L
Original Assignee
Marten Brian M L
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 Marten Brian M L filed Critical Marten Brian M L
Priority to GB9023475A priority Critical patent/GB2250659A/en
Publication of GB9023475D0 publication Critical patent/GB9023475D0/en
Publication of GB2250659A publication Critical patent/GB2250659A/en
Withdrawn legal-status Critical Current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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB9023475A 1990-10-29 1990-10-29 A telephone call warning apparatus with auxiliary socket Withdrawn GB2250659A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9023475A GB2250659A (en) 1990-10-29 1990-10-29 A telephone call warning apparatus with auxiliary socket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9023475A GB2250659A (en) 1990-10-29 1990-10-29 A telephone call warning apparatus with auxiliary socket

Publications (2)

Publication Number Publication Date
GB9023475D0 true GB9023475D0 (en) 1990-12-12
GB2250659A GB2250659A (en) 1992-06-10

Family

ID=10684500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9023475A Withdrawn GB2250659A (en) 1990-10-29 1990-10-29 A telephone call warning apparatus with auxiliary socket

Country Status (1)

Country Link
GB (1) GB2250659A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128427A1 (en) * 1981-07-16 1983-02-03 Fritz Kuke Kg, 1000 Berlin TELEPHONE SYSTEM
GB2191911B (en) * 1986-06-19 1990-08-01 Talgold U K Telephone bell ringer
GB2207834A (en) * 1987-07-30 1989-02-08 Tetrel Ltd Telephone paging system

Also Published As

Publication number Publication date
GB2250659A (en) 1992-06-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)