FR332942A - Improvements to telephone communications with central battery - Google Patents

Improvements to telephone communications with central battery

Info

Publication number
FR332942A
FR332942A FR332942A FR332942DA FR332942A FR 332942 A FR332942 A FR 332942A FR 332942 A FR332942 A FR 332942A FR 332942D A FR332942D A FR 332942DA FR 332942 A FR332942 A FR 332942A
Authority
FR
France
Prior art keywords
telephone communications
central battery
battery
central
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
FR332942A
Other languages
French (fr)
Inventor
William Warren Dean
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
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR332942A publication Critical patent/FR332942A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
FR332942A 1903-06-10 Improvements to telephone communications with central battery Expired FR332942A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE164567T

Publications (1)

Publication Number Publication Date
FR332942A true FR332942A (en) 1903-11-11

Family

ID=5684539

Family Applications (1)

Application Number Title Priority Date Filing Date
FR332942A Expired FR332942A (en) 1903-06-10 Improvements to telephone communications with central battery

Country Status (2)

Country Link
DE (1) DE164567C (en)
FR (1) FR332942A (en)

Also Published As

Publication number Publication date
DE164567C (en)

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