BE470974A - - Google Patents
Info
- Publication number
- BE470974A BE470974A BE470974DA BE470974A BE 470974 A BE470974 A BE 470974A BE 470974D A BE470974D A BE 470974DA BE 470974 A BE470974 A BE 470974A
- 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
-
- 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
- H04M15/04—Recording calls, or communications in printed, perforated or other permanent form
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US336494A US2402700A (en) | 1940-05-22 | 1940-05-22 | Telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE470974A true BE470974A (en:Method) |
Family
ID=23316348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE470974D BE470974A (en:Method) | 1940-05-22 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2402700A (en:Method) |
| BE (1) | BE470974A (en:Method) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2698879A (en) * | 1943-05-05 | 1955-01-04 | American Telephone & Telegraph | Class of service determining circuit |
| US2513112A (en) * | 1944-07-19 | 1950-06-27 | Shepherd Judson O'd | Data recording system employing record controlled apparatus |
| US2599357A (en) * | 1946-02-23 | 1952-06-03 | Bell Telephone Labor Inc | Automatic telephone billing system |
| US2619545A (en) * | 1947-06-13 | 1952-11-25 | Bell Telephone Labor Inc | Telephone calling line identification and recording system |
| BE496507A (en:Method) * | 1949-07-08 | |||
| US2956127A (en) * | 1954-12-08 | 1960-10-11 | North Electric Co | Automatic telephone system |
| US3189687A (en) * | 1962-02-02 | 1965-06-15 | Charles G Miller | Telephone switching system |
-
0
- BE BE470974D patent/BE470974A/xx unknown
-
1940
- 1940-05-22 US US336494A patent/US2402700A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2402700A (en) | 1946-06-25 |