FI41409B - - Google Patents
Info
- Publication number
- FI41409B FI41409B FI2459/64A FI245964A FI41409B FI 41409 B FI41409 B FI 41409B FI 2459/64 A FI2459/64 A FI 2459/64A FI 245964 A FI245964 A FI 245964A FI 41409 B FI41409 B FI 41409B
- Authority
- FI
- Finland
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/58—Anti-side-tone circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interface Circuits In Exchanges (AREA)
- Coils Or Transformers For Communication (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2417763 | 1963-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FI41409B true FI41409B (fi) | 1969-07-31 |
Family
ID=11212378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI2459/64A FI41409B (fi) | 1963-11-27 | 1964-11-23 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3404238A (fi) |
| AT (1) | AT251663B (fi) |
| BE (1) | BE656274A (fi) |
| CH (1) | CH430800A (fi) |
| ES (1) | ES306459A1 (fi) |
| FI (1) | FI41409B (fi) |
| GB (1) | GB1050226A (fi) |
| LU (1) | LU47453A1 (fi) |
| NL (1) | NL6412328A (fi) |
| SE (1) | SE325058B (fi) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB655774A (en) * | 1950-05-15 | 1951-08-01 | Standard Telephones Cables Ltd | Improvements in or relating to telephone substation circuit |
| BE510745A (fi) * | 1951-04-18 | |||
| DE1036929B (de) * | 1955-10-14 | 1958-08-21 | Krone Kg | Gabelschaltung zum Anschluss von Zweidrahtleitungen unterschiedlicher Impedanz mit einem Differentialuebertrager |
-
0
- GB GB1050226D patent/GB1050226A/en active Active
-
1964
- 1964-10-22 NL NL6412328A patent/NL6412328A/xx unknown
- 1964-10-27 CH CH1397264A patent/CH430800A/it unknown
- 1964-10-28 AT AT913664A patent/AT251663B/de active
- 1964-11-20 SE SE14064/64A patent/SE325058B/xx unknown
- 1964-11-23 FI FI2459/64A patent/FI41409B/fi active
- 1964-11-26 ES ES0306459A patent/ES306459A1/es not_active Expired
- 1964-11-26 BE BE656274D patent/BE656274A/xx not_active Expired
- 1964-11-27 US US414348A patent/US3404238A/en not_active Expired - Lifetime
- 1964-11-27 LU LU47453A patent/LU47453A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES306459A1 (es) | 1965-05-01 |
| US3404238A (en) | 1968-10-01 |
| AT251663B (de) | 1967-01-10 |
| LU47453A1 (fi) | 1965-01-27 |
| NL6412328A (fi) | 1965-05-28 |
| GB1050226A (fi) | |
| CH430800A (it) | 1967-02-28 |
| BE656274A (fi) | 1965-03-16 |
| SE325058B (fi) | 1970-06-22 |