MX156924A - Mejoras en dispositivo exclusor para telefonos instalados en paralelo - Google Patents
Mejoras en dispositivo exclusor para telefonos instalados en paraleloInfo
- Publication number
- MX156924A MX156924A MX204354A MX20435485A MX156924A MX 156924 A MX156924 A MX 156924A MX 204354 A MX204354 A MX 204354A MX 20435485 A MX20435485 A MX 20435485A MX 156924 A MX156924 A MX 156924A
- Authority
- MX
- Mexico
- Prior art keywords
- parallel
- exclusive device
- phones
- installed phones
- exclusive
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/68—Circuit arrangements for preventing eavesdropping
- H04M1/70—Lock-out or secrecy arrangements in party-line systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Emergency Protection Circuit Devices (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES1984282513U ES282513Y (es) | 1984-11-12 | 1984-11-12 | Dispositivo exclusor para telefonos instalados en paralelo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX156924A true MX156924A (es) | 1988-10-14 |
Family
ID=8432815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX204354A MX156924A (es) | 1984-11-12 | 1985-02-18 | Mejoras en dispositivo exclusor para telefonos instalados en paralelo |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0182393A3 (es) |
| AU (1) | AU572959B2 (es) |
| BR (1) | BR8501351A (es) |
| CA (1) | CA1230438A (es) |
| ES (1) | ES282513Y (es) |
| GR (1) | GR850967B (es) |
| MX (1) | MX156924A (es) |
| PT (1) | PT80026B (es) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63217758A (ja) * | 1987-03-05 | 1988-09-09 | Nec Corp | 分岐電話機 |
| IT1219764B (it) * | 1988-06-29 | 1990-05-24 | Cselt Centro Studi Lab Telecom | Dispositivo per l'uso esclusivo di una singola linea telefonica da parte di un telefono in impianti dotati di una molteplicita di telefoni |
| GB8903268D0 (en) * | 1989-02-14 | 1989-04-05 | Cts Trading Co Ltd | Communication apparatus |
| AT392974B (de) * | 1989-07-13 | 1991-07-25 | Chemiefaser Lenzing Ag | Mischpolyimide sowie verfahren zu ihrer herstellung |
| NO991801L (no) | 1999-04-15 | 2000-10-16 | Ericsson Telefon Ab L M | FremgangsmÕte for forbedring av et telefonsystem |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7809628A (nl) * | 1978-09-21 | 1980-03-25 | Nederlanden Staat | Schakeling voor multipel aangesloten telefoontoestel- len. |
| JPS5553950A (en) * | 1978-10-18 | 1980-04-19 | Hachishiro Kawamura | Multi-telephone device |
| JPS607255A (ja) * | 1983-06-27 | 1985-01-16 | Kanda Tsushin Kogyo Kk | 秘話機能付親子電話装置 |
-
1984
- 1984-11-12 ES ES1984282513U patent/ES282513Y/es not_active Expired
-
1985
- 1985-02-14 AU AU38727/85A patent/AU572959B2/en not_active Ceased
- 1985-02-18 MX MX204354A patent/MX156924A/es unknown
- 1985-02-28 PT PT80026A patent/PT80026B/pt not_active IP Right Cessation
- 1985-03-12 CA CA000476309A patent/CA1230438A/en not_active Expired
- 1985-03-26 BR BR8501351A patent/BR8501351A/pt unknown
- 1985-04-22 GR GR850967A patent/GR850967B/el unknown
- 1985-07-09 EP EP85201128A patent/EP0182393A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CA1230438A (en) | 1987-12-15 |
| BR8501351A (pt) | 1986-10-14 |
| ES282513Y (es) | 1986-10-01 |
| AU3872785A (en) | 1986-05-22 |
| EP0182393A3 (en) | 1987-09-30 |
| AU572959B2 (en) | 1988-05-19 |
| PT80026A (en) | 1985-03-01 |
| PT80026B (en) | 1986-10-28 |
| GR850967B (es) | 1985-11-25 |
| EP0182393A2 (en) | 1986-05-28 |
| ES282513U (es) | 1986-03-16 |
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