PT68643A - Improvements in or relating to electronic detection circuits - Google Patents
Improvements in or relating to electronic detection circuitsInfo
- Publication number
- PT68643A PT68643A PT68643A PT6864378A PT68643A PT 68643 A PT68643 A PT 68643A PT 68643 A PT68643 A PT 68643A PT 6864378 A PT6864378 A PT 6864378A PT 68643 A PT68643 A PT 68643A
- Authority
- PT
- Portugal
- Prior art keywords
- relating
- detection circuits
- electronic detection
- electronic
- circuits
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB44492/77A GB1600254A (en) | 1977-10-26 | 1977-10-26 | Electronic detection circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PT68643A true PT68643A (en) | 1978-11-01 |
Family
ID=10433570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT68643A PT68643A (en) | 1977-10-26 | 1978-10-10 | Improvements in or relating to electronic detection circuits |
Country Status (9)
| Country | Link |
|---|---|
| BR (1) | BR7807016A (en) |
| GB (1) | GB1600254A (en) |
| HK (1) | HK32083A (en) |
| KE (1) | KE3276A (en) |
| MY (1) | MY8400348A (en) |
| NZ (1) | NZ188397A (en) |
| PT (1) | PT68643A (en) |
| SG (1) | SG49383G (en) |
| ZA (1) | ZA785039B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU193107B (en) * | 1985-03-29 | 1987-08-28 | Bhg Hiradastech Vallalat | Circuit arrangement for making circuit of main route, in particular to digital sub-exchanges |
-
1977
- 1977-10-26 GB GB44492/77A patent/GB1600254A/en not_active Expired
-
1978
- 1978-09-05 ZA ZA00785039A patent/ZA785039B/en unknown
- 1978-09-12 NZ NZ188397A patent/NZ188397A/en unknown
- 1978-10-10 PT PT68643A patent/PT68643A/en unknown
- 1978-10-24 BR BR7807016A patent/BR7807016A/en unknown
-
1983
- 1983-03-08 KE KE3276A patent/KE3276A/en unknown
- 1983-08-10 SG SG493/83A patent/SG49383G/en unknown
- 1983-08-25 HK HK320/83A patent/HK32083A/en unknown
-
1984
- 1984-12-30 MY MY348/84A patent/MY8400348A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SG49383G (en) | 1985-03-08 |
| NZ188397A (en) | 1982-03-23 |
| KE3276A (en) | 1983-05-13 |
| ZA785039B (en) | 1979-08-29 |
| BR7807016A (en) | 1979-07-17 |
| GB1600254A (en) | 1981-10-14 |
| MY8400348A (en) | 1984-12-31 |
| HK32083A (en) | 1983-09-02 |
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