FR366816A - Intercom system for central telephone offices - Google Patents

Intercom system for central telephone offices

Info

Publication number
FR366816A
FR366816A FR366816DA FR366816A FR 366816 A FR366816 A FR 366816A FR 366816D A FR366816D A FR 366816DA FR 366816 A FR366816 A FR 366816A
Authority
FR
France
Prior art keywords
intercom system
central telephone
telephone offices
offices
central
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
Arthur Thomas Milnor Thomson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR366816A publication Critical patent/FR366816A/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
    • H04M1/272—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR366816D 1906-01-03 1906-01-03 Intercom system for central telephone offices Expired FR366816A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR366816T 1906-01-03

Publications (1)

Publication Number Publication Date
FR366816A true FR366816A (en) 1906-10-12

Family

ID=1413999

Family Applications (1)

Application Number Title Priority Date Filing Date
FR366816D Expired FR366816A (en) 1906-01-03 1906-01-03 Intercom system for central telephone offices

Country Status (1)

Country Link
FR (1) FR366816A (en)

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