FR2377735B3 - - Google Patents
Info
- Publication number
- FR2377735B3 FR2377735B3 FR7800105A FR7800105A FR2377735B3 FR 2377735 B3 FR2377735 B3 FR 2377735B3 FR 7800105 A FR7800105 A FR 7800105A FR 7800105 A FR7800105 A FR 7800105A FR 2377735 B3 FR2377735 B3 FR 2377735B3
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Telephone Set Structure (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA269,735A CA1050154A (en) | 1977-01-14 | 1977-01-14 | Telephone conferencing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2377735A1 FR2377735A1 (en) | 1978-08-11 |
| FR2377735B3 true FR2377735B3 (en) | 1980-10-24 |
Family
ID=4107730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7800105A Granted FR2377735A1 (en) | 1977-01-14 | 1978-01-04 | CONFERENCE ROOM TELEPHONE DEVICE |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS5389606A (en) |
| BE (1) | BE862702A (en) |
| CA (1) | CA1050154A (en) |
| DE (1) | DE2800882C2 (en) |
| DK (1) | DK5678A (en) |
| ES (1) | ES465952A1 (en) |
| FR (1) | FR2377735A1 (en) |
| GB (1) | GB1587549A (en) |
| IT (1) | IT1089288B (en) |
| NL (1) | NL7714104A (en) |
| NO (1) | NO780126L (en) |
| SE (1) | SE416510B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61242499A (en) * | 1985-04-19 | 1986-10-28 | シユア・ブラザ−ズ・インコ−ポレイテツド | Microphone apparatus |
| FR2617660B1 (en) * | 1987-06-30 | 1990-06-08 | Larvor Rene | SOUND RECORDING AND RESTITUTION DEVICE, PARTICULARLY FOR AUDIO-CONFERENCES |
| DE3734447C1 (en) * | 1987-10-12 | 1989-05-18 | Telefonbau & Normalzeit Gmbh | Conference speakerphone |
| FR2670351B1 (en) * | 1990-12-05 | 1997-04-30 | France Etat | SOUND RECORDING AND RESTITUTING APPARATUS. |
| FR2702918B1 (en) * | 1993-03-19 | 1995-05-12 | Prescom Sarl | Sound recording and reproducing apparatus, and its application to audio conference. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH400245A (en) * | 1965-10-02 | 1965-10-15 | Peiker Heinrich | Facility for two-way communication |
-
1977
- 1977-01-14 CA CA269,735A patent/CA1050154A/en not_active Expired
- 1977-12-14 GB GB52043/77A patent/GB1587549A/en not_active Expired
- 1977-12-20 NL NL7714104A patent/NL7714104A/en not_active Application Discontinuation
- 1977-12-30 IT IT31487/77A patent/IT1089288B/en active
-
1978
- 1978-01-04 FR FR7800105A patent/FR2377735A1/en active Granted
- 1978-01-05 DK DK5678A patent/DK5678A/en unknown
- 1978-01-06 BE BE184153A patent/BE862702A/en unknown
- 1978-01-09 SE SE7800213A patent/SE416510B/en not_active IP Right Cessation
- 1978-01-10 DE DE2800882A patent/DE2800882C2/en not_active Expired
- 1978-01-12 NO NO780126A patent/NO780126L/en unknown
- 1978-01-13 ES ES465952A patent/ES465952A1/en not_active Expired
- 1978-01-13 JP JP207478A patent/JPS5389606A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| SE416510B (en) | 1981-01-05 |
| DE2800882C2 (en) | 1985-02-28 |
| BE862702A (en) | 1978-07-06 |
| CA1050154A (en) | 1979-03-06 |
| NL7714104A (en) | 1978-07-18 |
| FR2377735A1 (en) | 1978-08-11 |
| NO780126L (en) | 1978-07-17 |
| DE2800882A1 (en) | 1978-07-20 |
| GB1587549A (en) | 1981-04-08 |
| IT1089288B (en) | 1985-06-18 |
| JPS6133314B2 (en) | 1986-08-01 |
| ES465952A1 (en) | 1978-09-16 |
| DK5678A (en) | 1978-07-15 |
| SE7800213L (en) | 1978-07-15 |
| JPS5389606A (en) | 1978-08-07 |