NL236432A - - Google Patents
Info
- Publication number
- NL236432A NL236432A NL236432DA NL236432A NL 236432 A NL236432 A NL 236432A NL 236432D A NL236432D A NL 236432DA NL 236432 A NL236432 A NL 236432A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- 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)
- Dc Digital Transmission (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES57271A DE1055060B (de) | 1958-03-10 | 1958-03-10 | Schaltungsanordnung zum Empfang und zur Auswertung unterschiedlicher Signalstroeme bei der Informationsuebertragung, insbesondere in Anlagen der Nachrichtenvermittlungstechnik |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL236432A true NL236432A (https=) |
Family
ID=7491691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL236432D NL236432A (https=) | 1958-03-10 |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE575976A (https=) |
| CH (1) | CH366073A (https=) |
| DE (1) | DE1055060B (https=) |
| FR (1) | FR1229795A (https=) |
| GB (1) | GB906158A (https=) |
| NL (1) | NL236432A (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3665489A (en) * | 1969-06-06 | 1972-05-23 | Ericsson Telefon Ab L M | Telephone instrument for voice frequency choice of number |
-
0
- NL NL236432D patent/NL236432A/xx unknown
-
1958
- 1958-03-10 DE DES57271A patent/DE1055060B/de active Pending
-
1959
- 1959-02-21 BE BE575976A patent/BE575976A/fr unknown
- 1959-03-04 CH CH7032259A patent/CH366073A/de unknown
- 1959-03-04 FR FR788355A patent/FR1229795A/fr not_active Expired
- 1959-03-09 GB GB807459A patent/GB906158A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE575976A (fr) | 1959-06-15 |
| DE1055060B (de) | 1959-04-16 |
| GB906158A (en) | 1962-09-19 |
| CH366073A (de) | 1962-12-15 |
| FR1229795A (fr) | 1960-09-09 |