GB362881A - Improvements in or relating to telephone plants - Google Patents

Improvements in or relating to telephone plants

Info

Publication number
GB362881A
GB362881A GB17275/30A GB1727530A GB362881A GB 362881 A GB362881 A GB 362881A GB 17275/30 A GB17275/30 A GB 17275/30A GB 1727530 A GB1727530 A GB 1727530A GB 362881 A GB362881 A GB 362881A
Authority
GB
United Kingdom
Prior art keywords
speaker
amplified
loud
relating
reproduced
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.)
Expired
Application number
GB17275/30A
Other languages
English (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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB362881A publication Critical patent/GB362881A/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
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB17275/30A 1929-06-07 1930-06-04 Improvements in or relating to telephone plants Expired GB362881A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE362881X 1929-06-07

Publications (1)

Publication Number Publication Date
GB362881A true GB362881A (en) 1931-12-08

Family

ID=20308955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17275/30A Expired GB362881A (en) 1929-06-07 1930-06-04 Improvements in or relating to telephone plants

Country Status (3)

Country Link
BE (1) BE370810A (el)
FR (1) FR696312A (el)
GB (1) GB362881A (el)

Also Published As

Publication number Publication date
FR696312A (fr) 1930-12-29
BE370810A (el)

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