BE447417A - - Google Patents
Info
- Publication number
- BE447417A BE447417A BE447417DA BE447417A BE 447417 A BE447417 A BE 447417A BE 447417D A BE447417D A BE 447417DA BE 447417 A BE447417 A BE 447417A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/08—Metering calls to called party, i.e. B-party charged for the communication
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL255843X | 1941-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE447417A true BE447417A (fr) |
Family
ID=19781301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE447417D BE447417A (fr) | 1941-08-21 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2440277A (fr) |
| BE (1) | BE447417A (fr) |
| CH (1) | CH255843A (fr) |
| FR (1) | FR885486A (fr) |
| GB (1) | GB597688A (fr) |
| NL (1) | NL59752C (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2535513A (en) * | 1946-02-23 | 1950-12-26 | Automatic Elect Lab | Testing device for line identifying equipment |
| GB614177A (en) * | 1946-05-25 | 1948-12-10 | Automatic Telephone & Elect | Improvements in or relating to electrical signalling systems |
| BE473455A (fr) * | 1946-07-25 | |||
| US2619545A (en) * | 1947-06-13 | 1952-11-25 | Bell Telephone Labor Inc | Telephone calling line identification and recording system |
| US2570971A (en) * | 1947-11-14 | 1951-10-09 | Bell Telephone Labor Inc | Vertical line number translator |
| US2535446A (en) * | 1948-06-16 | 1950-12-26 | Bell Telephone Labor Inc | Carrier communication system |
| US2554149A (en) * | 1948-07-08 | 1951-05-22 | Bell Telephone Labor Inc | Translator for calling line identification |
| US2879338A (en) * | 1953-02-09 | 1959-03-24 | Bell Telephone Labor Inc | Identification system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1944244A (en) * | 1930-12-06 | 1934-01-23 | Bell Telephone Labor Inc | Telephone system |
| US1846261A (en) * | 1931-04-11 | 1932-02-23 | American Telephone & Telegraph | Telephone system |
| US1846516A (en) * | 1931-06-05 | 1932-02-23 | American Telephone & Telegraph | Telephone system |
| US2222099A (en) * | 1938-11-07 | 1940-11-19 | Fides Ges Fur Verwaltung Und V | Telephone system |
| NL67277C (fr) * | 1939-09-21 | |||
| USRE23388E (en) * | 1940-09-20 | 1951-07-10 | Line identification circuit for |
-
0
- NL NL59752D patent/NL59752C/xx active
- BE BE447417D patent/BE447417A/xx unknown
-
1942
- 1942-07-28 CH CH255843D patent/CH255843A/de unknown
- 1942-08-25 FR FR885486D patent/FR885486A/fr not_active Expired
-
1943
- 1943-05-08 US US486273A patent/US2440277A/en not_active Expired - Lifetime
-
1944
- 1944-05-09 GB GB8783/44A patent/GB597688A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH255843A (de) | 1948-07-15 |
| GB597688A (en) | 1948-02-02 |
| FR885486A (fr) | 1943-09-16 |
| US2440277A (en) | 1948-04-27 |
| NL59752C (fr) |