FR2140286A1 - - Google Patents
Info
- Publication number
- FR2140286A1 FR2140286A1 FR7120759A FR7120759A FR2140286A1 FR 2140286 A1 FR2140286 A1 FR 2140286A1 FR 7120759 A FR7120759 A FR 7120759A FR 7120759 A FR7120759 A FR 7120759A FR 2140286 A1 FR2140286 A1 FR 2140286A1
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7120759A FR2140286B1 (online.php) | 1971-06-08 | 1971-06-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7120759A FR2140286B1 (online.php) | 1971-06-08 | 1971-06-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2140286A1 true FR2140286A1 (online.php) | 1973-01-19 |
| FR2140286B1 FR2140286B1 (online.php) | 1975-04-18 |
Family
ID=9078302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7120759A Expired FR2140286B1 (online.php) | 1971-06-08 | 1971-06-08 |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2140286B1 (online.php) |
-
1971
- 1971-06-08 FR FR7120759A patent/FR2140286B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2140286B1 (online.php) | 1975-04-18 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |