BE441725A - - Google Patents
Info
- Publication number
- BE441725A BE441725A BE441725DA BE441725A BE 441725 A BE441725 A BE 441725A BE 441725D A BE441725D A BE 441725DA BE 441725 A BE441725 A BE 441725A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
- H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/08—Metering calls to called party, i.e. B-party charged for the communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
- H04M3/64—Arrangements for signalling the number or class of the calling line to the operator
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US295889A US2244700A (en) | 1939-09-21 | 1939-09-21 | Telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE441725A true BE441725A (es) |
Family
ID=23139643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE441725D BE441725A (es) | 1939-09-21 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2244700A (es) |
| BE (1) | BE441725A (es) |
| FR (1) | FR902622A (es) |
| NL (1) | NL67277C (es) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL59752C (es) * | 1941-08-21 | |||
| NL157970B (nl) * | 1945-04-19 | Hurth Masch Zahnrad Carl | Schakelinrichting voor een wrijvingskoppeling. | |
| US2600502A (en) * | 1948-04-24 | 1952-06-17 | Bell Telephone Labor Inc | Calling line and private branch exchange line identifier |
| NL82021C (es) * | 1950-01-28 | |||
| NL87833C (es) * | 1950-06-15 | |||
| NL164620B (nl) * | 1950-10-13 | Hoechst Ag | Werkwijze voor het vervaardigen van een door warm- krimpen verdicht baanvormig vezelvlies, en inrichting voor het toepassen van de werkwijze. | |
| US2696600A (en) * | 1950-11-30 | 1954-12-07 | Rca Corp | Combinatorial information-storage network |
| US2657272A (en) * | 1951-03-03 | 1953-10-27 | Bell Telephone Labor Inc | Electronic induction translator |
| US2934603A (en) * | 1951-07-12 | 1960-04-26 | Nederlanden Staat | Electronic relay and the control of arrangements therewith |
| US2740842A (en) * | 1952-02-12 | 1956-04-03 | Commercial Radio Sound Corp | Audible and visual two-way communication and annunciation system for hospitals and the like |
| US2844811A (en) * | 1952-08-20 | 1958-07-22 | Monroe Calculating Machine | Switching circuits |
| US2896021A (en) * | 1954-02-09 | 1959-07-21 | Standard Electric Time Co | Inter-communication system |
| US2926334A (en) * | 1955-04-20 | 1960-02-23 | Bell Telephone Labor Inc | Error detection circuit |
| US2992410A (en) * | 1956-02-28 | 1961-07-11 | Bell Telephone Labor Inc | Selector for switching network |
| US2978641A (en) * | 1956-10-31 | 1961-04-04 | Siemens And Halske Ag Berlin A | Circuit ambiguity testing apparatus |
| US3016425A (en) * | 1956-12-18 | 1962-01-09 | Bell Telephone Labor Inc | Ferroelectric translator |
| US2972015A (en) * | 1957-05-08 | 1961-02-14 | Fairchild Camera Instr Co | Coding apparatus |
| US3017459A (en) * | 1958-07-14 | 1962-01-16 | Fairchild Camera Instr Co | Coding apparatus |
| US3088103A (en) * | 1958-12-18 | 1963-04-30 | Royal Mcbee Corp | Matrix encoders |
| FR1283363A (fr) * | 1960-12-22 | 1962-02-02 | Dispositif permettant de transmettre à distance un grand nombre d'informations par appel codé d'une grandeur dont la donnée a été préalablement affichée sur un panneau | |
| US3160101A (en) * | 1962-02-15 | 1964-12-08 | North Electric Co | Automatic selective control of pumping engines |
| GB1437483A (en) * | 1973-04-19 | 1976-05-26 | Gte International Inc | Operator display arrangements of a telephone exchange switching system |
-
0
- NL NL67277D patent/NL67277C/xx active
- BE BE441725D patent/BE441725A/xx unknown
-
1939
- 1939-09-21 US US295889A patent/US2244700A/en not_active Expired - Lifetime
-
1942
- 1942-01-10 FR FR902622D patent/FR902622A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL67277C (es) | |
| US2244700A (en) | 1941-06-10 |
| FR902622A (fr) | 1945-09-05 |