FR420816A - Poste téléphonique auxiliaire - Google Patents

Poste téléphonique auxiliaire

Info

Publication number
FR420816A
FR420816A FR420816A FR420816DA FR420816A FR 420816 A FR420816 A FR 420816A FR 420816 A FR420816 A FR 420816A FR 420816D A FR420816D A FR 420816DA FR 420816 A FR420816 A FR 420816A
Authority
FR
France
Prior art keywords
telephone set
auxiliary telephone
auxiliary
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
FR420816A
Other languages
English (en)
French (fr)
Inventor
Sydney Stein
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.)
SYDNEY STEIN
Original Assignee
SYDNEY STEIN
Filing date
Publication date
Application filed by SYDNEY STEIN filed Critical SYDNEY STEIN
Application granted granted Critical
Publication of FR420816A publication Critical patent/FR420816A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/12—Calling substations, e.g. by ringing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
FR420816A 1910-09-27 Poste téléphonique auxiliaire Expired FR420816A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE235087T

Publications (1)

Publication Number Publication Date
FR420816A true FR420816A (fr) 1911-02-08

Family

ID=5895033

Family Applications (1)

Application Number Title Priority Date Filing Date
FR420816A Expired FR420816A (fr) 1910-09-27 Poste téléphonique auxiliaire

Country Status (2)

Country Link
DE (1) DE235087C (enrdf_load_stackoverflow)
FR (1) FR420816A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE235087C (enrdf_load_stackoverflow)

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