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
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL304566X | 1951-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE510536A true BE510536A (he) |
Family
ID=19783440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE510536D BE510536A (he) | 1951-04-10 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2812383A (he) |
| BE (1) | BE510536A (he) |
| CH (1) | CH304566A (he) |
| FR (1) | FR1053559A (he) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL279905A (he) * | 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)
| 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 |
-
0
- BE BE510536D patent/BE510536A/xx unknown
-
1952
- 1952-03-01 US US274384A patent/US2812383A/en not_active Expired - Lifetime
- 1952-04-08 FR FR1053559D patent/FR1053559A/fr not_active Expired
- 1952-04-08 CH CH304566D patent/CH304566A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH304566A (de) | 1955-01-15 |
| US2812383A (en) | 1957-11-05 |
| FR1053559A (fr) | 1954-02-03 |