BE510745A - - Google Patents
Info
- Publication number
- BE510745A BE510745A BE510745DA BE510745A BE 510745 A BE510745 A BE 510745A BE 510745D A BE510745D A BE 510745DA BE 510745 A BE510745 A BE 510745A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/76—Compensating for differences in line impedance
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2775649X | 1951-04-18 | ||
| GB308152X | 1951-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE510745A true BE510745A (fi) |
Family
ID=32328137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE510745D BE510745A (fi) | 1951-04-18 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US2770679A (fi) |
| BE (1) | BE510745A (fi) |
| CH (2) | CH315749A (fi) |
| FR (3) | FR1048760A (fi) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1188662B (de) * | 1963-07-11 | 1965-03-11 | Standard Elektrik Lorenz Ag | Ausgleichsnetzwerk fuer Fernsprech-Teilnehmerstationen |
| GB1050226A (fi) * | 1963-11-27 | |||
| JPS495644B1 (fi) * | 1970-02-07 | 1974-02-08 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2287998A (en) * | 1939-06-10 | 1942-06-30 | Bell Telephone Labor Inc | Telephone circuit |
| US2288049A (en) * | 1939-06-10 | 1942-06-30 | Bell Telephone Labor Inc | Telephone set circuit |
| BE468046A (fi) * | 1942-10-24 | |||
| BE485032A (fi) * | 1947-12-22 | |||
| US2604543A (en) * | 1950-11-09 | 1952-07-22 | Bell Telephone Labor Inc | Equalizer circuit |
| BE505815A (fi) * | 1950-12-27 |
-
0
- BE BE510745D patent/BE510745A/xx unknown
-
1951
- 1951-05-08 FR FR1048760D patent/FR1048760A/fr not_active Expired
-
1952
- 1952-04-14 US US282131A patent/US2770679A/en not_active Expired - Lifetime
- 1952-04-14 US US282132A patent/US2775649A/en not_active Expired - Lifetime
- 1952-04-17 FR FR63714D patent/FR63714E/fr not_active Expired
- 1952-04-17 CH CH315749D patent/CH315749A/de unknown
- 1952-04-25 FR FR63718D patent/FR63718E/fr not_active Expired
- 1952-04-26 CH CH308152D patent/CH308152A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH308152A (fr) | 1955-06-30 |
| FR1048760A (fr) | 1953-12-23 |
| US2770679A (en) | 1956-11-13 |
| US2775649A (en) | 1956-12-25 |
| FR63714E (fr) | 1955-10-03 |
| CH315749A (de) | 1956-08-31 |
| FR63718E (fr) | 1955-10-03 |