NL54464C - - Google Patents
Info
- Publication number
- NL54464C NL54464C NL54464DA NL54464C NL 54464 C NL54464 C NL 54464C NL 54464D A NL54464D A NL 54464DA NL 54464 C NL54464 C NL 54464C
- Authority
- NL
- Netherlands
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)
- Exchange Systems With Centralized Control (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB234895X | 1938-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL54464C true NL54464C (en) |
Family
ID=10196442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL54464D NL54464C (en) | 1938-08-13 |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE435678A (en) |
| CH (1) | CH234895A (en) |
| DE (1) | DE892463C (en) |
| FR (1) | FR858506A (en) |
| GB (1) | GB517993A (en) |
| NL (1) | NL54464C (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1705917A (en) * | 1925-02-19 | 1929-03-19 | Toll-service telephone-exchange system | |
| DE635669C (en) * | 1932-11-01 | 1936-09-28 | Friedrich Merk Telefonbau Akt | Device for determining the number of a calling subscriber in self-access connection systems |
| US2193967A (en) * | 1933-01-05 | 1940-03-19 | Teletype Corp | Automatic message exchange system |
-
0
- BE BE435678D patent/BE435678A/xx unknown
- NL NL54464D patent/NL54464C/xx active
-
1938
- 1938-08-13 GB GB23923/38A patent/GB517993A/en not_active Expired
-
1939
- 1939-07-29 FR FR858506D patent/FR858506A/en not_active Expired
- 1939-08-12 CH CH234895D patent/CH234895A/en unknown
- 1939-08-13 DE DEI3233D patent/DE892463C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE435678A (en) | |
| DE892463C (en) | 1953-10-08 |
| FR858506A (en) | 1940-11-27 |
| CH234895A (en) | 1944-10-31 |
| GB517993A (en) | 1940-02-14 |