FR473896A - Telephone system - Google Patents

Telephone system

Info

Publication number
FR473896A
FR473896A FR473896A FR473896DA FR473896A FR 473896 A FR473896 A FR 473896A FR 473896 A FR473896 A FR 473896A FR 473896D A FR473896D A FR 473896DA FR 473896 A FR473896 A FR 473896A
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
FR473896A
Other languages
French (fr)
Inventor
Edward Alfred Graham
William John Rickets
Ernest Albert Sanftleben
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 FR473896A publication Critical patent/FR473896A/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)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
FR473896A 1914-01-10 1914-06-05 Telephone system Expired FR473896A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191400767T 1914-01-10

Publications (1)

Publication Number Publication Date
FR473896A true FR473896A (en) 1915-01-28

Family

ID=34360474

Family Applications (1)

Application Number Title Priority Date Filing Date
FR473896A Expired FR473896A (en) 1914-01-10 1914-06-05 Telephone system

Country Status (2)

Country Link
FR (1) FR473896A (en)
GB (4) GB191400767A (en)

Also Published As

Publication number Publication date
GB191408906A (en) 1914-06-11
GB191400767A (en) 1914-08-27
GB191408831A (en) 1914-06-11
GB191406356A (en) 1914-11-26

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