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FR418057A - Central battery electric signaling device - Google Patents

Central battery electric signaling device

Info

Publication number
FR418057A
FR418057A FR418057A FR418057DA FR418057A FR 418057 A FR418057 A FR 418057A FR 418057 A FR418057 A FR 418057A FR 418057D A FR418057D A FR 418057DA FR 418057 A FR418057 A FR 418057A
Authority
FR
France
Prior art keywords
signaling device
battery electric
central battery
electric signaling
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
FR418057A
Other languages
French (fr)
Inventor
John Chisholm Francis
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 FR418057A publication Critical patent/FR418057A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Locating Faults (AREA)
FR418057A 1910-07-08 Central battery electric signaling device Expired FR418057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE239737T

Publications (1)

Publication Number Publication Date
FR418057A true FR418057A (en) 1910-11-30

Family

ID=5903921

Family Applications (1)

Application Number Title Priority Date Filing Date
FR418057A Expired FR418057A (en) 1910-07-08 Central battery electric signaling device

Country Status (2)

Country Link
DE (1) DE239737C (en)
FR (1) FR418057A (en)

Also Published As

Publication number Publication date
DE239737C (en)

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