DE206269C - - Google Patents

Info

Publication number
DE206269C
DE206269C DENDAT206269D DE206269DA DE206269C DE 206269 C DE206269 C DE 206269C DE NDAT206269 D DENDAT206269 D DE NDAT206269D DE 206269D A DE206269D A DE 206269DA DE 206269 C DE206269 C DE 206269C
Authority
DE
Germany
Prior art keywords
extensions
branch
extension
electromagnets
line
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.)
Active
Application number
DENDAT206269D
Other languages
German (de)
English (en)
Publication of DE206269C publication Critical patent/DE206269C/de
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/68—Circuit arrangements for preventing eavesdropping
    • H04M1/70—Lock-out or secrecy arrangements in party-line systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
DENDAT206269D Active DE206269C (cg-RX-API-DMAC10.html)

Publications (1)

Publication Number Publication Date
DE206269C true DE206269C (cg-RX-API-DMAC10.html)

Family

ID=468451

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT206269D Active DE206269C (cg-RX-API-DMAC10.html)

Country Status (1)

Country Link
DE (1) DE206269C (cg-RX-API-DMAC10.html)

Similar Documents

Publication Publication Date Title
DE573201C (de) Schaltungsanordnung fuer Verbindungsleitungen in Fernmelde-, insbesondere Fernsprechanlagen
DE604407C (cg-RX-API-DMAC10.html)
DE154490C (cg-RX-API-DMAC10.html)
DE260706C (cg-RX-API-DMAC10.html)
DE291131C (cg-RX-API-DMAC10.html)
DE171950C (cg-RX-API-DMAC10.html)
DE242794C (cg-RX-API-DMAC10.html)
DE229476C (cg-RX-API-DMAC10.html)
DE384971C (de) Vorrichtung zur Verhinderung der Benutzung eines Fernsprechers mit Zentralbatteriebetrieb seitens Unbefugter
DE146809C (cg-RX-API-DMAC10.html)
DE305853C (cg-RX-API-DMAC10.html)
DE294529C (cg-RX-API-DMAC10.html)
DE208340C (cg-RX-API-DMAC10.html)
DE186054C (cg-RX-API-DMAC10.html)
AT110186B (de) Schaltungsanordnung für Fernsprechanlagen mit Wählerbetrieb.
DE250971C (cg-RX-API-DMAC10.html)
DE203677C (cg-RX-API-DMAC10.html)
DE255930C (cg-RX-API-DMAC10.html)
DE581943C (de) Schaltungsanordnung zur Herstellung von Sonderbetriebsverbindungen in Fernsprechanlagen mit Waehlerbetrieb
DE173837C (cg-RX-API-DMAC10.html)
DE138017C (cg-RX-API-DMAC10.html)
DE98808C (cg-RX-API-DMAC10.html)
DE142867C (cg-RX-API-DMAC10.html)
DE564683C (cg-RX-API-DMAC10.html)
DE260189C (cg-RX-API-DMAC10.html)