BE509959A - - Google Patents
Info
- Publication number
- BE509959A BE509959A BE509959DA BE509959A BE 509959 A BE509959 A BE 509959A BE 509959D A BE509959D A BE 509959DA BE 509959 A BE509959 A BE 509959A
- 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
- H04M15/04—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)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US712508XA | 1951-03-28 | 1951-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE509959A true BE509959A (https=) |
Family
ID=22100189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE509959D BE509959A (https=) | 1951-03-28 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE509959A (https=) |
| GB (1) | GB712508A (https=) |
-
0
- BE BE509959D patent/BE509959A/xx unknown
-
1952
- 1952-02-18 GB GB4284/52A patent/GB712508A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB712508A (en) | 1954-07-28 |