BE536017A - - Google Patents

Info

Publication number
BE536017A
BE536017A BE536017DA BE536017A BE 536017 A BE536017 A BE 536017A BE 536017D A BE536017D A BE 536017DA BE 536017 A BE536017 A BE 536017A
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 BE536017A publication Critical patent/BE536017A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
BE536017D 1954-02-26 BE536017A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL331072X 1954-02-26

Publications (1)

Publication Number Publication Date
BE536017A true BE536017A (xx)

Family

ID=19784373

Family Applications (1)

Application Number Title Priority Date Filing Date
BE536017D BE536017A (xx) 1954-02-26

Country Status (7)

Country Link
US (1) US2835740A (xx)
BE (1) BE536017A (xx)
CH (1) CH331072A (xx)
DE (1) DE954799C (xx)
FR (1) FR1119577A (xx)
GB (1) GB765404A (xx)
NL (1) NL86629C (xx)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082297A (en) * 1956-08-02 1963-03-19 Itt Telephone line circuit
US2836734A (en) * 1957-04-09 1958-05-27 Westinghouse Electric Corp Voltage control apparatus
NL127302C (xx) * 1958-04-28
CH374104A (de) * 1958-07-17 1963-12-31 Standard Telephon & Radio Ag Fernmeldeanlage mit relaislosen Teilnehmer-Leitungsstromkreisen
GB916636A (en) * 1959-01-05 1963-01-23 Ass Elect Ind Improvements relating to automatic telecommunication switching systems
US3129289A (en) * 1959-06-26 1964-04-14 Itt Electronic line circuit
DE1128475B (de) * 1960-03-12 1962-04-26 Arnstadt Fernmeldewerk Elektronische Teilnehmerschaltung
US3156779A (en) * 1960-11-25 1964-11-10 Automatic Elect Lab Line finding arrangement
NL289634A (xx) * 1962-03-01
DE1222989B (de) * 1962-03-17 1966-08-18 Arnstadt Fernmeldewerk Schaltungsanordnung fuer Teilnehmerschaltungen mit zwei Teilnehmern je Anschlussleitung in elektronisch gesteuerten Fernsprechanlagen
DE1258462B (de) * 1965-11-09 1968-01-11 Standard Elektrik Lorenz Ag Schaltungsanordnung zum Empfang von Gleichstromsignalen mittels einer Transistorschaltstufe
DE1762897B2 (de) * 1968-09-19 1971-06-03 Standard Elektrik Lorenz AG, 7000 Stutt gart Schaltungsanordnung zur auswertung des schleifenzustandes und zur unterscheidung von schleifenwiderstaenden in einer fernmelde insbesondere fernsprechleitung
US4197431A (en) * 1978-10-02 1980-04-08 Digital Telephone Systems, Inc. Subscriber loop feed apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676210A (en) * 1948-08-11 1954-04-20 Hartford Nat Bank & Trust Co Potential comparing selector circuit
BE493314A (xx) * 1949-01-17
NL146973B (nl) * 1949-06-14 Smit Nijmegen Electrotec Voor het kiezen van grove spanningstrappen bestemde, stroomloos schakelbare, draaibare grofkiezer voor een regelschakelaar.
US2714629A (en) * 1951-05-19 1955-08-02 Nederlanden Staat Marking circuit

Also Published As

Publication number Publication date
FR1119577A (fr) 1956-06-21
DE954799C (de) 1956-12-20
GB765404A (en) 1957-01-09
NL86629C (xx)
US2835740A (en) 1958-05-20
CH331072A (de) 1958-06-30

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