FR939754A - Improvements to telephone installations - Google Patents

Improvements to telephone installations

Info

Publication number
FR939754A
FR939754A FR939754DA FR939754A FR 939754 A FR939754 A FR 939754A FR 939754D A FR939754D A FR 939754DA FR 939754 A FR939754 A FR 939754A
Authority
FR
France
Prior art keywords
telephone installations
installations
telephone
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)
Inventor
Rene Grange
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 filed Critical
Application granted granted Critical
Publication of FR939754A publication Critical patent/FR939754A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR939754D 1947-01-16 1947-01-16 Improvements to telephone installations Expired FR939754A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR939754T 1947-01-16

Publications (1)

Publication Number Publication Date
FR939754A true FR939754A (en) 1948-11-24

Family

ID=9458648

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939754D Expired FR939754A (en) 1947-01-16 1947-01-16 Improvements to telephone installations

Country Status (1)

Country Link
FR (1) FR939754A (en)

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