NL254433A - - Google Patents
Info
- Publication number
- NL254433A NL254433A NL254433DA NL254433A NL 254433 A NL254433 A NL 254433A NL 254433D A NL254433D A NL 254433DA NL 254433 A NL254433 A NL 254433A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude
- H03G11/02—Limiting amplitude; Limiting rate of change of amplitude by means of diodes
-
- 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)
- Amplifiers (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL254433 | 1960-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL254433A true NL254433A (https=) |
Family
ID=19752506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL254433D NL254433A (https=) | 1960-08-01 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3177294A (https=) |
| JP (1) | JPS3811761B1 (https=) |
| DE (1) | DE1154522B (https=) |
| FR (1) | FR1296397A (https=) |
| GB (1) | GB948849A (https=) |
| NL (1) | NL254433A (https=) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3417390A (en) * | 1965-10-12 | 1968-12-17 | Gen Signal Corp | Telemetering |
| FR2055900A5 (https=) * | 1969-08-05 | 1971-05-14 | Ericsson Telefon Ab L M |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2223700A (en) * | 1938-10-10 | 1940-12-03 | Carl A Norgren | Lubricator |
| US2332430A (en) * | 1942-07-16 | 1943-10-19 | Bell Telephone Labor Inc | Two-way telephone system |
| FR1005063A (fr) * | 1947-05-29 | 1952-04-07 | Dispositif pour éviter l'effet larsen dans les installations téléphoniques à hautparleur | |
| US2743314A (en) * | 1950-09-06 | 1956-04-24 | Le Teleampliphone Soc | Two-way loudspeaker telephone installations |
| US2785231A (en) * | 1954-02-25 | 1957-03-12 | Bell Telephone Labor Inc | Telephone set with amplifier |
| BE541780A (https=) * | 1954-10-06 | |||
| GB839975A (en) * | 1955-07-28 | 1960-06-29 | Telephone Mfg Co Ltd | Improvements in and relating to signal switched telecommunication circuits |
| DE1058563B (de) * | 1956-02-22 | 1959-06-04 | Siemens Ag | Schaltungsanordnung zur Pfeifminderung bei Lautfernsprechanlagen |
| US2801288A (en) * | 1956-03-29 | 1957-07-30 | Bell Telephone Labor Inc | Equalizing circuit |
| BE563970A (https=) * | 1957-01-15 | |||
| NL245570A (https=) * | 1958-12-29 |
-
0
- NL NL254433D patent/NL254433A/xx unknown
-
1961
- 1961-06-26 US US119460A patent/US3177294A/en not_active Expired - Lifetime
- 1961-07-28 DE DEN20392A patent/DE1154522B/de active Pending
- 1961-07-28 GB GB27470/61A patent/GB948849A/en not_active Expired
- 1961-07-31 FR FR869510A patent/FR1296397A/fr not_active Expired
- 1961-08-01 JP JP2739961A patent/JPS3811761B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3177294A (en) | 1965-04-06 |
| JPS3811761B1 (https=) | 1963-07-11 |
| FR1296397A (fr) | 1962-06-15 |
| GB948849A (en) | 1964-02-05 |
| DE1154522B (de) | 1963-09-19 |