FR831632A - Improvements to telephone links to obtain amplified communications at reception - Google Patents

Improvements to telephone links to obtain amplified communications at reception

Info

Publication number
FR831632A
FR831632A FR831632DA FR831632A FR 831632 A FR831632 A FR 831632A FR 831632D A FR831632D A FR 831632DA FR 831632 A FR831632 A FR 831632A
Authority
FR
France
Prior art keywords
reception
obtain amplified
telephone links
amplified communications
communications
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
Other languages
French (fr)
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.)
MAGNETA TELEPHONE
Original Assignee
MAGNETA TELEPHONE
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 MAGNETA TELEPHONE filed Critical MAGNETA TELEPHONE
Application granted granted Critical
Publication of FR831632A publication Critical patent/FR831632A/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)
  • Emergency Alarm Devices (AREA)
FR831632D 1938-04-07 1937-04-13 Improvements to telephone links to obtain amplified communications at reception Expired FR831632A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR49397T 1938-04-07

Publications (1)

Publication Number Publication Date
FR831632A true FR831632A (en) 1938-09-09

Family

ID=8684581

Family Applications (2)

Application Number Title Priority Date Filing Date
FR831632D Expired FR831632A (en) 1938-04-07 1937-04-13 Improvements to telephone links to obtain amplified communications at reception
FR49397D Expired FR49397E (en) 1938-04-07 1938-04-07 Improvements to telephone links to obtain amplified communications at reception

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR49397D Expired FR49397E (en) 1938-04-07 1938-04-07 Improvements to telephone links to obtain amplified communications at reception

Country Status (3)

Country Link
BE (1) BE427523A (en)
FR (2) FR831632A (en)
GB (1) GB507697A (en)

Also Published As

Publication number Publication date
FR49397E (en) 1939-03-24
BE427523A (en)
GB507697A (en) 1939-06-20

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