FR335353A - Improvements in auxiliary line circuits linking central telephone offices to each other - Google Patents

Improvements in auxiliary line circuits linking central telephone offices to each other

Info

Publication number
FR335353A
FR335353A FR335353A FR335353DA FR335353A FR 335353 A FR335353 A FR 335353A FR 335353 A FR335353 A FR 335353A FR 335353D A FR335353D A FR 335353DA FR 335353 A FR335353 A FR 335353A
Authority
FR
France
Prior art keywords
auxiliary line
line circuits
central telephone
telephone offices
linking 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
FR335353A
Other languages
French (fr)
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.)
SOC IND DES TELEPHONES CONSTR
Original Assignee
SOC IND DES TELEPHONES CONSTR
Filing date
Publication date
Application filed by SOC IND DES TELEPHONES CONSTR filed Critical SOC IND DES TELEPHONES CONSTR
Application granted granted Critical
Publication of FR335353A publication Critical patent/FR335353A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/08—Manual exchanges using connecting means other than cords

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR335353A 1903-09-07 Improvements in auxiliary line circuits linking central telephone offices to each other Expired FR335353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR335353T

Publications (1)

Publication Number Publication Date
FR335353A true FR335353A (en) 1904-01-22

Family

ID=8891247

Family Applications (2)

Application Number Title Priority Date Filing Date
FR3227A Expired FR3227E (en) Improvements in auxiliary line circuits linking central telephone offices to each other
FR335353A Expired FR335353A (en) 1903-09-07 Improvements in auxiliary line circuits linking central telephone offices to each other

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR3227A Expired FR3227E (en) Improvements in auxiliary line circuits linking central telephone offices to each other

Country Status (1)

Country Link
FR (2) FR335353A (en)

Also Published As

Publication number Publication date
FR3227E (en) 1904-10-04

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