NL135699C - - Google Patents
Info
- Publication number
- NL135699C NL135699C NL135699DA NL135699C NL 135699 C NL135699 C NL 135699C NL 135699D A NL135699D A NL 135699DA NL 135699 C NL135699 C NL 135699C
- 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
- H04Q1/38—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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR871627A FR80563E (fr) | 1961-08-25 | 1961-08-25 | Perfectionnements aux systèmes téléphoniques automatiques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL135699C true NL135699C (fr) |
Family
ID=8761787
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL255269D NL255269A (fr) | 1961-08-25 | ||
| NL135699D NL135699C (fr) | 1961-08-25 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL255269D NL255269A (fr) | 1961-08-25 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR80563E (fr) |
| NL (2) | NL135699C (fr) |
-
0
- NL NL255269D patent/NL255269A/xx unknown
- NL NL135699D patent/NL135699C/xx active
-
1961
- 1961-08-25 FR FR871627A patent/FR80563E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL255269A (fr) | |
| FR80563E (fr) | 1963-05-17 |