NL6716500A - - Google Patents
Info
- Publication number
- NL6716500A NL6716500A NL6716500A NL6716500A NL6716500A NL 6716500 A NL6716500 A NL 6716500A NL 6716500 A NL6716500 A NL 6716500A NL 6716500 A NL6716500 A NL 6716500A NL 6716500 A NL6716500 A NL 6716500A
- 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
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuits Of Receivers In General (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST026196 | 1966-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6716500A true NL6716500A (en) | 1968-06-04 |
Family
ID=7460890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6716500A NL6716500A (en) | 1966-12-03 | 1967-12-04 |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH498539A (en) |
| DE (1) | DE1512006A1 (en) |
| GB (1) | GB1179614A (en) |
| NL (1) | NL6716500A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2399175A1 (en) * | 1977-07-26 | 1979-02-23 | Western Electric Co | MULTI-FREQUENCY SIGNAL RECEPTION DETECTION DEVICE |
-
1966
- 1966-12-03 DE DE19661512006 patent/DE1512006A1/en active Pending
-
1967
- 1967-11-30 CH CH1686567A patent/CH498539A/en not_active IP Right Cessation
- 1967-11-30 GB GB5459567A patent/GB1179614A/en not_active Expired
- 1967-12-04 NL NL6716500A patent/NL6716500A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2399175A1 (en) * | 1977-07-26 | 1979-02-23 | Western Electric Co | MULTI-FREQUENCY SIGNAL RECEPTION DETECTION DEVICE |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1179614A (en) | 1970-01-28 |
| DE1512006A1 (en) | 1969-02-20 |
| CH498539A (en) | 1970-10-31 |