BE473455A - - Google Patents
Info
- Publication number
- BE473455A BE473455A BE473455DA BE473455A BE 473455 A BE473455 A BE 473455A BE 473455D A BE473455D A BE 473455DA BE 473455 A BE473455 A BE 473455A
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22136/46A GB615271A (en) | 1946-07-25 | 1946-07-25 | Improvements in or relating to electrical signalling systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE473455A true BE473455A (xx) |
Family
ID=10174476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE473455D BE473455A (xx) | 1946-07-25 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2547804A (xx) |
| BE (1) | BE473455A (xx) |
| DE (1) | DE826164C (xx) |
| FR (1) | FR947454A (xx) |
| GB (1) | GB615271A (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL82021C (xx) * | 1950-01-28 | |||
| US2691151A (en) * | 1950-05-22 | 1954-10-05 | Products & Licensing Corp | Multiple switching systems |
| US2963553A (en) * | 1954-03-17 | 1960-12-06 | Douglas L White | System for identifying telephone lines |
| FR1212783A (fr) * | 1958-07-11 | 1960-03-25 | Constr Telephoniques | Perfectionnements aux dispositifs d'identification |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1864553A (en) * | 1930-12-06 | 1932-06-28 | Bell Telephone Labor Inc | Telephone system |
| US1846261A (en) * | 1931-04-11 | 1932-02-23 | American Telephone & Telegraph | Telephone system |
| GB475419A (en) * | 1936-05-18 | 1937-11-18 | Automatic Electric Co Ltd | Improvements in or relating to telephone systems |
| US2077537A (en) * | 1936-05-19 | 1937-04-20 | American Telephone & Telegraph | System for tracing telephone calls |
| US2222099A (en) * | 1938-11-07 | 1940-11-19 | Fides Ges Fur Verwaltung Und V | Telephone system |
| BE438173A (xx) * | 1939-03-02 | |||
| BE468235A (xx) * | 1940-03-23 | |||
| US2270246A (en) * | 1940-09-20 | 1942-01-20 | Bell Telephone Labor Inc | Telephone system |
| US2252766A (en) * | 1940-10-17 | 1941-08-19 | Bell Telephone Labor Inc | Signaling system |
| NL57799C (nl) * | 1941-03-07 | 1945-09-15 | Bell Telephone Mfg | Schakeling voor het besturen van een apparatuur in seinstelsels, in het bijzonder van de instelling van schakelaars in centrales voor telefoonstelsels |
| NL58889C (xx) * | 1941-04-25 | |||
| BE477655A (xx) * | 1941-08-15 | |||
| NL59752C (xx) * | 1941-08-21 | |||
| BE473684A (xx) * | 1942-12-21 | 1900-01-01 | ||
| GB614177A (en) * | 1946-05-25 | 1948-12-10 | Automatic Telephone & Elect | Improvements in or relating to electrical signalling systems |
-
0
- BE BE473455D patent/BE473455A/xx unknown
-
1946
- 1946-07-25 GB GB22136/46A patent/GB615271A/en not_active Expired
-
1947
- 1947-06-02 FR FR947454D patent/FR947454A/fr not_active Expired
- 1947-06-13 US US754561A patent/US2547804A/en not_active Expired - Lifetime
-
1948
- 1948-12-25 DE DEP26890A patent/DE826164C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE826164C (de) | 1951-12-27 |
| GB615271A (en) | 1949-01-04 |
| US2547804A (en) | 1951-04-03 |
| FR947454A (fr) | 1949-07-04 |