FR56444E - - Google Patents

Info

Publication number
FR56444E
FR56444E FR56444DA FR56444E FR 56444 E FR56444 E FR 56444E FR 56444D A FR56444D A FR 56444DA FR 56444 E FR56444 E FR 56444E
Authority
FR
France
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)
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.)
Publication date
Application granted granted Critical
Publication of FR56444E publication Critical patent/FR56444E/fr
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • H04M9/001Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR56444D 1945-06-25 Expired FR56444E (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR997251T 1945-06-25

Publications (1)

Publication Number Publication Date
FR56444E true FR56444E (es) 1952-10-07

Family

ID=9558476

Family Applications (2)

Application Number Title Priority Date Filing Date
FR56444D Expired FR56444E (es) 1945-06-25
FR997251D Expired FR997251A (fr) 1945-06-25 1945-06-25 Perfectionnements apportés aux installations de téléphonie, notamment de téléphonie haut-parleur

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR997251D Expired FR997251A (fr) 1945-06-25 1945-06-25 Perfectionnements apportés aux installations de téléphonie, notamment de téléphonie haut-parleur

Country Status (3)

Country Link
BE (1) BE460657A (es)
FR (2) FR997251A (es)
LU (1) LU27795A1 (es)

Also Published As

Publication number Publication date
LU27795A1 (es)
BE460657A (es)
FR997251A (fr) 1952-01-03

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