NL69491C - - Google Patents

Info

Publication number
NL69491C
NL69491C NL69491DA NL69491C NL 69491 C NL69491 C NL 69491C NL 69491D A NL69491D A NL 69491DA NL 69491 C NL69491 C NL 69491C
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 NL69491C publication Critical patent/NL69491C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
NL69491D 1943-05-06 NL69491C (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US577088XA 1943-05-06 1943-05-06
US485827A US2354682A (en) 1943-05-06 1943-05-06 Electric selection controlling circuit

Publications (1)

Publication Number Publication Date
NL69491C true NL69491C (enrdf_load_stackoverflow)

Family

ID=26736805

Family Applications (1)

Application Number Title Priority Date Filing Date
NL69491D NL69491C (enrdf_load_stackoverflow) 1943-05-06

Country Status (2)

Country Link
US (1) US2354682A (enrdf_load_stackoverflow)
NL (1) NL69491C (enrdf_load_stackoverflow)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832834A (en) * 1941-04-26 1958-04-29 Nederlanden Staat Signalling arrangement for telecommunication systems
US2492135A (en) * 1945-07-07 1949-12-27 Int Standard Electric Corp Potential matching electrical control system
US2576097A (en) * 1945-07-23 1951-11-27 Int Standard Electric Corp Automatic telephone selective switching system
US2462074A (en) * 1946-01-05 1949-02-22 Int Standard Electric Corp Biasing potential switching system
NL65863C (enrdf_load_stackoverflow) * 1946-01-30
FR933606A (fr) * 1946-08-27 1948-04-27 Constr Telephoniques Perfectionnements aux systèmes de téléphonie automatique
US2570214A (en) * 1946-09-14 1951-10-09 Int Standard Electric Corp Second test circuit for selector wipers
US2559601A (en) * 1946-11-13 1951-07-10 Int Standard Electric Corp Automatic selector control system
US2616980A (en) * 1948-04-26 1952-11-04 Hartford Nat Bank & Trust Co Flip-flop circuit for operating a switch
US2654000A (en) * 1948-05-20 1953-09-29 Int Standard Electric Corp Multipotential type register controller
US2676210A (en) * 1948-08-11 1954-04-20 Hartford Nat Bank & Trust Co Potential comparing selector circuit
DE856459C (de) * 1948-08-11 1952-11-20 Philips Nv Schaltungsanordnung fuer selbsttaetige Fernmeldeanlagen zur Einstellung eines Waehlers mittels einer Spannungsvergleichsmethode
US2647165A (en) * 1948-09-13 1953-07-28 Hartford Nat Bank & Trust Co Apparatus for breaking contact resistance in a marker-controlled selector
NL146973B (nl) * 1949-06-14 Smit Nijmegen Electrotec Voor het kiezen van grove spanningstrappen bestemde, stroomloos schakelbare, draaibare grofkiezer voor een regelschakelaar.
NL179054B (nl) * 1952-08-19 Lummus Co Werkwijze voor de omzetting van een alkylpiperidine tot een cyanopyridine.

Also Published As

Publication number Publication date
US2354682A (en) 1944-08-01

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