BE510536A - - Google Patents

Info

Publication number
BE510536A
BE510536A BE510536DA BE510536A BE 510536 A BE510536 A BE 510536A BE 510536D A BE510536D A BE 510536DA BE 510536 A BE510536 A BE 510536A
Authority
BE
Belgium
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 BE510536A publication Critical patent/BE510536A/xx

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
BE510536D 1951-04-10 BE510536A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL304566X 1951-04-10

Publications (1)

Publication Number Publication Date
BE510536A true BE510536A (ja)

Family

ID=19783440

Family Applications (1)

Application Number Title Priority Date Filing Date
BE510536D BE510536A (ja) 1951-04-10

Country Status (4)

Country Link
US (1) US2812383A (ja)
BE (1) BE510536A (ja)
CH (1) CH304566A (ja)
FR (1) FR1053559A (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL279905A (ja) * 1961-06-20
US3665489A (en) * 1969-06-06 1972-05-23 Ericsson Telefon Ab L M Telephone instrument for voice frequency choice of number
US3740487A (en) * 1971-04-05 1973-06-19 Scovill Manufacturing Co Intercommunication and remote unit selection system employing a minimum of interconnecting wire
CN115014180B (zh) * 2022-05-05 2023-04-07 厦门大学 一种触摸定位传感器制作方法及触摸定位传感器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1761115A (en) * 1927-09-02 1930-06-03 John E Gardner Automatic telephone system
US2438496A (en) * 1944-05-01 1948-03-30 Int Standard Electric Corp Telephone system employing key type call transmitter
US2476534A (en) * 1944-08-28 1949-07-19 Electric Sorting Machine Compa Voltage or current regulator
US2461200A (en) * 1945-03-08 1949-02-08 Bell Telephone Labor Inc Automatic line voltage compensator and impulse repeater for signaling systems
US2620401A (en) * 1945-04-04 1952-12-02 Vigren Sten Daniel Automatic telephone system
US2676210A (en) * 1948-08-11 1954-04-20 Hartford Nat Bank & Trust Co Potential comparing selector circuit
US2640883A (en) * 1948-09-11 1953-06-02 Hartford Nat Bank & Trust Co Marker control arrangement for selectors

Also Published As

Publication number Publication date
FR1053559A (fr) 1954-02-03
CH304566A (de) 1955-01-15
US2812383A (en) 1957-11-05

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