BE696394A - - Google Patents
Info
- Publication number
- BE696394A BE696394A BE696394DA BE696394A BE 696394 A BE696394 A BE 696394A BE 696394D A BE696394D A BE 696394DA BE 696394 A BE696394 A BE 696394A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/58—Anti-side-tone circuits
- H04M1/585—Anti-side-tone circuits implemented without inductive element
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54064366A | 1966-04-06 | 1966-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE696394A true BE696394A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1967-09-01 |
Family
ID=24156342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE696394D BE696394A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1966-04-06 | 1967-03-31 |
Country Status (8)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1762804B2 (de) * | 1968-08-29 | 1972-01-20 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zur regelung der sende und empfangsbezugs daempfung einer teilnehmerstation einer fernsprechanlage |
| GB1350205A (en) * | 1970-07-24 | 1974-04-18 | Post Office | Telephone subscribers instrument circuits |
| US3955053A (en) * | 1971-09-30 | 1976-05-04 | Siemens Aktiengesellschaft | Integrated circuit arrangement for a telephone subscriber station |
| SE380699B (sv) * | 1974-03-05 | 1975-11-10 | Ericsson Telefon Ab L M | Elektronisk talkrets for en centralbatterimatad telefonapparat. |
| US4081622A (en) * | 1976-10-29 | 1978-03-28 | Technex International Ltd. | Electronic circuit for a speakerphone |
| US4071713A (en) * | 1976-12-27 | 1978-01-31 | Northern Telecom Limited | Telephone speech network |
| CA1056970A (en) * | 1977-01-10 | 1979-06-19 | Northern Telecom Limited | Electronic network for telephone set |
| US5029203A (en) * | 1988-11-30 | 1991-07-02 | Rohm Co., Ltd. | Side tone preventive circuit for telephone |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2629024A (en) * | 1950-12-29 | 1953-02-17 | Bell Telephone Labor Inc | Unbalanced-to-ground two-to-fourwire connection |
| BE535520A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1954-02-08 |
-
1966
- 1966-04-06 US US540643A patent/US3462560A/en not_active Expired - Lifetime
-
1967
- 1967-03-24 FR FR100345A patent/FR1521690A/fr not_active Expired
- 1967-03-30 GB GB04450/67A patent/GB1185514A/en not_active Expired
- 1967-03-31 BE BE696394D patent/BE696394A/xx not_active IP Right Cessation
- 1967-04-04 ES ES339342A patent/ES339342A1/es not_active Expired
- 1967-04-05 DE DE19671512829 patent/DE1512829B2/de active Pending
- 1967-04-05 JP JP2129967A patent/JPS4516524B1/ja active Pending
- 1967-04-05 NL NL6704843A patent/NL6704843A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1512829B2 (de) | 1970-05-21 |
| FR1521690A (fr) | 1968-04-19 |
| GB1185514A (en) | 1970-03-25 |
| JPS4516524B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1970-06-08 |
| ES339342A1 (es) | 1969-06-16 |
| US3462560A (en) | 1969-08-19 |
| NL6704843A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1967-10-09 |
| DE1512829A1 (de) | 1969-06-26 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE20 | Patent expired |
Owner name: WESTERN ELECTRIC CY INC. Effective date: 19870331 |