NL69823C - - Google Patents
Info
- Publication number
- NL69823C NL69823C NL69823DA NL69823C NL 69823 C NL69823 C NL 69823C NL 69823D A NL69823D A NL 69823DA NL 69823 C NL69823 C NL 69823C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US600822XA | 1944-02-12 | 1944-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL69823C true NL69823C (enrdf_load_stackoverflow) |
Family
ID=22027223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL69823D NL69823C (enrdf_load_stackoverflow) | 1944-02-12 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE464918A (enrdf_load_stackoverflow) |
| GB (1) | GB600822A (enrdf_load_stackoverflow) |
| NL (1) | NL69823C (enrdf_load_stackoverflow) |
-
0
- BE BE464918D patent/BE464918A/xx unknown
- NL NL69823D patent/NL69823C/xx active
-
1944
- 1944-12-08 GB GB24602/44A patent/GB600822A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE464918A (enrdf_load_stackoverflow) | |
| GB600822A (en) | 1948-04-20 |