JPS434764B1 - - Google Patents
Info
- Publication number
- JPS434764B1 JPS434764B1 JP5112866A JP5112866A JPS434764B1 JP S434764 B1 JPS434764 B1 JP S434764B1 JP 5112866 A JP5112866 A JP 5112866A JP 5112866 A JP5112866 A JP 5112866A JP S434764 B1 JPS434764 B1 JP S434764B1
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
-
- 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
- H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US47770965A | 1965-08-06 | 1965-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS434764B1 true JPS434764B1 (ja) | 1968-02-21 |
Family
ID=23897031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5112866A Pending JPS434764B1 (ja) | 1965-08-06 | 1966-08-05 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3428754A (ja) |
| JP (1) | JPS434764B1 (ja) |
| BE (1) | BE684969A (ja) |
| DE (1) | DE1288159B (ja) |
| FR (1) | FR1488779A (ja) |
| GB (1) | GB1153671A (ja) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3601549A (en) * | 1969-11-25 | 1971-08-24 | Bell Telephone Labor Inc | Switching circuit for cancelling the direct sound transmission from the loudspeaker to the microphone in a loudspeaking telephone set |
| GB1458032A (en) * | 1973-02-05 | 1976-12-08 | Gen Electric Co Ltd | Conference circuits for use in telecommunications systems |
| US3982076A (en) * | 1974-12-23 | 1976-09-21 | Bell Telephone Laboratories, Incorporated | Network control circuit for a time division switching system |
| US3970797A (en) * | 1975-01-13 | 1976-07-20 | Gte Sylvania Incorporated | Digital conference bridge |
| CA1151327A (en) * | 1981-06-08 | 1983-08-02 | Ernst A. Munter | Digital conference circuit and method |
| FR2601836A1 (fr) * | 1986-07-15 | 1988-01-22 | Provence Mediterranee Telecomm | Dispositif multiconversation |
| US7230043B2 (en) * | 2004-09-07 | 2007-06-12 | 3M Innovative Properties Company | Hydrophilic polymer composition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2515726A (en) * | 1945-09-24 | 1950-07-18 | Automatic Elect Lab | Intercommunicating system |
| US3287499A (en) * | 1963-07-01 | 1966-11-22 | Stromberg Carlson Corp | Conference circuit |
-
1965
- 1965-08-06 US US477709A patent/US3428754A/en not_active Expired - Lifetime
-
1966
- 1966-07-23 DE DEW42073A patent/DE1288159B/de active Pending
- 1966-08-02 BE BE684969D patent/BE684969A/xx unknown
- 1966-08-04 GB GB34948/66A patent/GB1153671A/en not_active Expired
- 1966-08-05 FR FR72246A patent/FR1488779A/fr not_active Expired
- 1966-08-05 JP JP5112866A patent/JPS434764B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1288159B (de) | 1969-01-30 |
| US3428754A (en) | 1969-02-18 |
| GB1153671A (en) | 1969-05-29 |
| FR1488779A (fr) | 1967-07-13 |
| BE684969A (ja) | 1967-01-16 |