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 ( )

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE536017A true BE536017A ( )

Family

ID=19784373

Family Applications (1)

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

Country Status (7)

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

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
NL238413A ( ) * 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
NL294136A ( ) * 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 ( ) * 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
DE954799C (de) 1956-12-20
GB765404A (en) 1957-01-09
US2835740A (en) 1958-05-20
CH331072A (de) 1958-06-30
FR1119577A (fr) 1956-06-21
NL86629C ( )

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