FR470383A - Telephone system - Google Patents

Telephone system

Info

Publication number
FR470383A
FR470383A FR470383A FR470383DA FR470383A FR 470383 A FR470383 A FR 470383A FR 470383 A FR470383 A FR 470383A FR 470383D A FR470383D A FR 470383DA FR 470383 A FR470383 A FR 470383A
Authority
FR
France
Prior art keywords
telephone system
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
FR470383A
Other languages
French (fr)
Inventor
Edward Alfred Graham
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 FR470383A publication Critical patent/FR470383A/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)
  • Near-Field Transmission Systems (AREA)
FR470383A 1913-11-15 1914-04-01 Telephone system Expired FR470383A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191326287T 1913-11-15

Publications (1)

Publication Number Publication Date
FR470383A true FR470383A (en) 1914-09-08

Family

ID=32580763

Family Applications (1)

Application Number Title Priority Date Filing Date
FR470383A Expired FR470383A (en) 1913-11-15 1914-04-01 Telephone system

Country Status (2)

Country Link
FR (1) FR470383A (en)
GB (1) GB191326287A (en)

Also Published As

Publication number Publication date
GB191326287A (en) 1914-04-23

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