NL220430A - - Google Patents

Info

Publication number
NL220430A
NL220430A NL220430DA NL220430A NL 220430 A NL220430 A NL 220430A NL 220430D A NL220430D A NL 220430DA NL 220430 A NL220430 A NL 220430A
Authority
NL
Netherlands
Application number
Priority date (The priority date 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 date listed.)
Publication of NL220430A publication Critical patent/NL220430A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/58Arrangements providing connection between main exchange and sub-exchange or satellite

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Radio Relay Systems (AREA)
NL220430D 1956-12-07 NL220430A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US626846A US2892037A (en) 1956-12-07 1956-12-07 Electrical information system

Publications (1)

Publication Number Publication Date
NL220430A true NL220430A (pt)

Family

ID=24512104

Family Applications (2)

Application Number Title Priority Date Filing Date
NL220430D NL220430A (pt) 1956-12-07
NL112427D NL112427C (pt) 1956-12-07

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL112427D NL112427C (pt) 1956-12-07

Country Status (6)

Country Link
US (1) US2892037A (pt)
BE (1) BE560633A (pt)
DE (1) DE1073552B (pt)
FR (1) FR1184842A (pt)
GB (1) GB843225A (pt)
NL (2) NL112427C (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061817A (en) * 1959-04-22 1962-10-30 Gen Dynamics Corp Finder circuit
US3028510A (en) * 1959-12-21 1962-04-03 Automatic Elect Lab Diode gate utilizing charged capacitor to forward bias diode
DE1162418B (de) * 1960-11-22 1964-02-06 Standard Elektrik Lorenz Ag Schaltungsanordnung zur Verhinderung der faelschlichen Auswertung von UEberspannungen durch Signalempfaenger in Fernmeldeanlagen
US3129291A (en) * 1960-12-29 1964-04-14 Bell Telephone Labor Inc Remote distributed telephone line concentrator
BE632293A (pt) * 1961-03-03
DE1157665B (de) * 1962-04-04 1963-11-21 Telefunken Patent Schaltungsanordnung zur Pruefung des Belegungszustandes von Teilnehmerleitungen in Fernmelde-, insbesondere Fernsprechanlagen
US3393276A (en) * 1964-10-14 1968-07-16 Ericsson Telefon Ab L M Threshold crosspoint identifying means for an automatic telephone exchange
DE1260552B (de) * 1965-02-15 1968-02-08 Telefonbau Relaislose Teilnehmeranschlussschaltung fuer Fernsprechanlagen
BE754235A (fr) * 1969-08-05 1970-12-31 Western Electric Co Circuit de supervision pour lignes telephoniques
ZA74205B (en) * 1973-02-12 1974-11-27 Int Standard Electric Corp Line condition signalling system
US4150258A (en) * 1975-02-03 1979-04-17 Oki Electric Industry Co., Ltd. Electronic switching system
US4292473A (en) * 1979-08-06 1981-09-29 International Standard Electric Corporation Loop supervision circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL89659C (pt) * 1952-01-26
US2715656A (en) * 1952-08-02 1955-08-16 Bell Telephone Labor Inc Electrical information system
US2724744A (en) * 1954-05-06 1955-11-22 Bell Telephone Labor Inc Remote line concentrator
US2783307A (en) * 1954-05-06 1957-02-26 Bell Telephone Labor Inc Supervisory circuit

Also Published As

Publication number Publication date
FR1184842A (fr) 1959-07-27
DE1073552B (de) 1960-01-21
BE560633A (pt)
NL112427C (pt)
GB843225A (en) 1960-08-04
US2892037A (en) 1959-06-23

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