GB8520864D0 - Communication arrangements - Google Patents

Communication arrangements

Info

Publication number
GB8520864D0
GB8520864D0 GB858520864A GB8520864A GB8520864D0 GB 8520864 D0 GB8520864 D0 GB 8520864D0 GB 858520864 A GB858520864 A GB 858520864A GB 8520864 A GB8520864 A GB 8520864A GB 8520864 D0 GB8520864 D0 GB 8520864D0
Authority
GB
United Kingdom
Prior art keywords
communication arrangements
arrangements
communication
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
GB858520864A
Other versions
GB2163625A (en
GB2163625B (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.)
Didsbury Engineering Co Ltd
Original Assignee
Didsbury Engineering Co 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
Priority claimed from GB848421223A external-priority patent/GB8421223D0/en
Priority claimed from GB848422949A external-priority patent/GB8422949D0/en
Application filed by Didsbury Engineering Co Ltd filed Critical Didsbury Engineering Co Ltd
Publication of GB8520864D0 publication Critical patent/GB8520864D0/en
Publication of GB2163625A publication Critical patent/GB2163625A/en
Application granted granted Critical
Publication of GB2163625B publication Critical patent/GB2163625B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Emergency Lowering Means (AREA)
GB08520864A 1984-08-21 1985-08-20 A communication arrangement Expired GB2163625B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848421223A GB8421223D0 (en) 1984-08-21 1984-08-21 Communication arrangement
GB848422949A GB8422949D0 (en) 1984-09-11 1984-09-11 Communication arrangement

Publications (3)

Publication Number Publication Date
GB8520864D0 true GB8520864D0 (en) 1985-09-25
GB2163625A GB2163625A (en) 1986-02-26
GB2163625B GB2163625B (en) 1988-01-27

Family

ID=26288146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08520864A Expired GB2163625B (en) 1984-08-21 1985-08-20 A communication arrangement

Country Status (1)

Country Link
GB (1) GB2163625B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE523942E (en) * 2003-09-04 2009-06-02 Bo Franzen Device for a noise canceling headset
SE530137C2 (en) 2006-06-27 2008-03-11 Bo Franzen Headset with throat microphone in combination with an ear-tight soundproof ear speaker

Also Published As

Publication number Publication date
GB2163625A (en) 1986-02-26
GB2163625B (en) 1988-01-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960820