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FR345554A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
FR345554A
FR345554A FR345554DA FR345554A FR 345554 A FR345554 A FR 345554A FR 345554D A FR345554D A FR 345554DA FR 345554 A FR345554 A FR 345554A
Authority
FR
France
Prior art keywords
telephone systems
telephone
systems
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.)
AMERICAN ELECTRIC TELEPHONE CO
Original Assignee
AMERICAN ELECTRIC TELEPHONE CO
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 AMERICAN ELECTRIC TELEPHONE CO filed Critical AMERICAN ELECTRIC TELEPHONE CO
Application granted granted Critical
Publication of FR345554A publication Critical patent/FR345554A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/12—Calling substations, e.g. by ringing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR345554D 1904-06-28 1904-06-28 Telephone systems Expired FR345554A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR345554T 1904-06-28

Publications (1)

Publication Number Publication Date
FR345554A true FR345554A (en) 1904-12-05

Family

ID=1394340

Family Applications (1)

Application Number Title Priority Date Filing Date
FR345554D Expired FR345554A (en) 1904-06-28 1904-06-28 Telephone systems

Country Status (1)

Country Link
FR (1) FR345554A (en)

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