NL86629C - - Google Patents
Info
- Publication number
- NL86629C NL86629C NL86629DA NL86629C NL 86629 C NL86629 C NL 86629C NL 86629D A NL86629D A NL 86629DA NL 86629 C NL86629 C NL 86629C
- Authority
- NL
- Netherlands
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL331072X | 1954-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL86629C true NL86629C (hu) |
Family
ID=19784373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL86629D NL86629C (hu) | 1954-02-26 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2835740A (hu) |
| BE (1) | BE536017A (hu) |
| CH (1) | CH331072A (hu) |
| DE (1) | DE954799C (hu) |
| FR (1) | FR1119577A (hu) |
| GB (1) | GB765404A (hu) |
| NL (1) | NL86629C (hu) |
Families Citing this family (13)
| 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 (hu) * | 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 (hu) * | 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)
| 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 (hu) * | 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 |
-
0
- NL NL86629D patent/NL86629C/xx active
- BE BE536017D patent/BE536017A/xx unknown
-
1955
- 1955-02-18 US US489123A patent/US2835740A/en not_active Expired - Lifetime
- 1955-02-23 GB GB5434/55A patent/GB765404A/en not_active Expired
- 1955-02-24 FR FR1119577D patent/FR1119577A/fr not_active Expired
- 1955-02-24 DE DEN10245A patent/DE954799C/de not_active Expired
- 1955-02-24 CH CH331072D patent/CH331072A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE954799C (de) | 1956-12-20 |
| GB765404A (en) | 1957-01-09 |
| US2835740A (en) | 1958-05-20 |
| BE536017A (hu) | |
| CH331072A (de) | 1958-06-30 |
| FR1119577A (fr) | 1956-06-21 |