FR2176634B3 - - Google Patents
Info
- Publication number
- FR2176634B3 FR2176634B3 FR7211691A FR7211691A FR2176634B3 FR 2176634 B3 FR2176634 B3 FR 2176634B3 FR 7211691 A FR7211691 A FR 7211691A FR 7211691 A FR7211691 A FR 7211691A FR 2176634 B3 FR2176634 B3 FR 2176634B3
- 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
- H04S—STEREOPHONIC SYSTEMSÂ
- 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)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7211691A FR2176634B3 (xx) | 1972-03-24 | 1972-03-24 | |
DE19732314634 DE2314634A1 (de) | 1972-03-24 | 1973-03-23 | Mehrkanal-stereo-lautsprecheranlage mit paarweise angeordneten lautsprechergruppen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7211691A FR2176634B3 (xx) | 1972-03-24 | 1972-03-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2176634A1 FR2176634A1 (xx) | 1973-11-02 |
FR2176634B3 true FR2176634B3 (xx) | 1975-06-20 |
Family
ID=9096264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7211691A Expired FR2176634B3 (xx) | 1972-03-24 | 1972-03-24 |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2314634A1 (xx) |
FR (1) | FR2176634B3 (xx) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5742691A (en) * | 1997-02-21 | 1998-04-21 | Ambourn; Paul R. | Surround sound converter |
-
1972
- 1972-03-24 FR FR7211691A patent/FR2176634B3/fr not_active Expired
-
1973
- 1973-03-23 DE DE19732314634 patent/DE2314634A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2314634A1 (de) | 1973-10-04 |
FR2176634A1 (xx) | 1973-11-02 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |