FR2141778A1 - - Google Patents
Info
- Publication number
- FR2141778A1 FR2141778A1 FR7220101A FR7220101A FR2141778A1 FR 2141778 A1 FR2141778 A1 FR 2141778A1 FR 7220101 A FR7220101 A FR 7220101A FR 7220101 A FR7220101 A FR 7220101A FR 2141778 A1 FR2141778 A1 FR 2141778A1
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/001—Current supply source at the exchanger providing current to substations
- H04M19/006—Circuits for increasing the range of current supply source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11486271A | 1971-06-04 | 1971-06-04 | |
| CA114,862A CA954991A (en) | 1971-06-04 | 1971-06-04 | Subscriber loop circuit apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2141778A1 true FR2141778A1 (enExample) | 1973-01-26 |
| FR2141778B1 FR2141778B1 (enExample) | 1973-07-13 |
Family
ID=25666815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR727220101A Expired FR2141778B1 (enExample) | 1971-06-04 | 1972-06-05 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3843844A (enExample) |
| AU (1) | AU473169B2 (enExample) |
| BE (1) | BE784382A (enExample) |
| CA (1) | CA954991A (enExample) |
| FR (1) | FR2141778B1 (enExample) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4323733A (en) * | 1980-11-28 | 1982-04-06 | Bell Telephone Laboratories, Inc. | Range extender with variable gain for coin telephone loops |
| US6829292B1 (en) | 2000-01-03 | 2004-12-07 | Symmetricom, Inc. | Increasing gain with isolating upstream and downstream filters and amplifiers |
| US6507606B2 (en) | 2000-03-29 | 2003-01-14 | Symmetrican, Inc. | Asymmetric digital subscriber line methods suitable for long subscriber loops |
| US20040151237A1 (en) * | 2000-05-31 | 2004-08-05 | Bitrage, Inc. | Satellite communications system |
| US6823001B1 (en) | 2000-05-31 | 2004-11-23 | Bitrage, Inc. | Dual stage communication processor |
| US7149242B1 (en) | 2000-05-31 | 2006-12-12 | Bitrage, Inc. | Communications system for improving transmission rates and transmission distances of data signals across communications links |
| US20020061058A1 (en) * | 2000-07-25 | 2002-05-23 | Symmetricom, Inc. | Subscriber loop repeater loopback for fault isolation |
| US12265495B2 (en) * | 2022-08-12 | 2025-04-01 | Hamilton Sundstrand Corporation | Signal reflection mitigation systems |
-
1971
- 1971-06-04 CA CA114,862A patent/CA954991A/en not_active Expired
-
1972
- 1972-02-11 US US00225398A patent/US3843844A/en not_active Expired - Lifetime
- 1972-05-24 AU AU42642/72A patent/AU473169B2/en not_active Expired
- 1972-06-05 FR FR727220101A patent/FR2141778B1/fr not_active Expired
- 1972-06-05 BE BE784382A patent/BE784382A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU473169B2 (en) | 1976-06-17 |
| AU4264272A (en) | 1973-11-29 |
| FR2141778B1 (enExample) | 1973-07-13 |
| CA954991A (en) | 1974-09-17 |
| BE784382A (fr) | 1972-12-05 |
| US3843844A (en) | 1974-10-22 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |