GB8725187D0 - Audio frequency sensing switch - Google Patents

Audio frequency sensing switch

Info

Publication number
GB8725187D0
GB8725187D0 GB878725187A GB8725187A GB8725187D0 GB 8725187 D0 GB8725187 D0 GB 8725187D0 GB 878725187 A GB878725187 A GB 878725187A GB 8725187 A GB8725187 A GB 8725187A GB 8725187 D0 GB8725187 D0 GB 8725187D0
Authority
GB
United Kingdom
Prior art keywords
audio frequency
sensing switch
frequency sensing
switch
audio
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Withdrawn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
GB878725187A
Other versions
GB2211701A (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.)
Bennett D G
Original Assignee
Bennett D G
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 Bennett D G filed Critical Bennett D G
Priority to GB8725187A priority Critical patent/GB2211701A/en
Publication of GB8725187D0 publication Critical patent/GB8725187D0/en
Publication of GB2211701A publication Critical patent/GB2211701A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal
    • G08B1/08—Systems for signalling characterised solely by the form of transmission of the signal using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuits Of Receivers In General (AREA)
GB8725187A 1987-10-27 1987-10-27 An audio frequency sensing switch Withdrawn GB2211701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8725187A GB2211701A (en) 1987-10-27 1987-10-27 An audio frequency sensing switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8725187A GB2211701A (en) 1987-10-27 1987-10-27 An audio frequency sensing switch

Publications (2)

Publication Number Publication Date
GB8725187D0 true GB8725187D0 (en) 1987-12-02
GB2211701A GB2211701A (en) 1989-07-05

Family

ID=10625997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8725187A Withdrawn GB2211701A (en) 1987-10-27 1987-10-27 An audio frequency sensing switch

Country Status (1)

Country Link
GB (1) GB2211701A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2801465B1 (en) * 1999-11-22 2002-02-22 Sagem MOBILE RADIO TELEPHONY STATION

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB535106A (en) * 1939-11-02 1941-03-28 William Alfred Hamilton Walker Emergency signals radio receiver
DE2045342A1 (en) * 1970-09-14 1972-03-16 Sel
AT324460B (en) * 1973-11-21 1975-09-10 Viennatome Hoergerate Produkti HEARING AID CONTROL
FR2266388B1 (en) * 1974-04-02 1979-02-16 Oceanic
AU5096985A (en) * 1984-11-23 1986-06-18 Warrack, A. . Acoustic signal attenuator

Also Published As

Publication number Publication date
GB2211701A (en) 1989-07-05

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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)