NL251680A - - Google Patents
Info
- Publication number
- NL251680A NL251680A NL251680DA NL251680A NL 251680 A NL251680 A NL 251680A NL 251680D A NL251680D A NL 251680DA NL 251680 A NL251680 A NL 251680A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL251680 | 1960-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL251680A true NL251680A (pm) |
Family
ID=19752351
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL127682D NL127682C (pm) | 1960-05-16 | ||
| NL251680D NL251680A (pm) | 1960-05-16 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL127682D NL127682C (pm) | 1960-05-16 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE603609A (pm) |
| CH (1) | CH424876A (pm) |
| DE (1) | DE1190050B (pm) |
| NL (2) | NL251680A (pm) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE825854C (de) * | 1949-08-26 | 1951-12-20 | Mix & Genest A G | Sprechschaltung fuer vierdraehtige Durchschaltung |
-
0
- NL NL127682D patent/NL127682C/xx active
- NL NL251680D patent/NL251680A/xx unknown
-
1961
- 1961-05-10 BE BE603609A patent/BE603609A/nl unknown
- 1961-05-12 CH CH560361A patent/CH424876A/de unknown
- 1961-05-15 DE DEA37440A patent/DE1190050B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE603609A (nl) | 1961-09-01 |
| DE1190050B (de) | 1965-04-01 |
| CH424876A (de) | 1966-11-30 |
| NL127682C (pm) |