NL53023C - - Google Patents
Info
- Publication number
- NL53023C NL53023C NL53023DA NL53023C NL 53023 C NL53023 C NL 53023C NL 53023D A NL53023D A NL 53023DA NL 53023 C NL53023 C NL 53023C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM137498D DE716346C (de) | 1937-03-16 | 1937-03-16 | Schaltung zur Verhinderung des Aufschaltens nichtberechtigter Sprechstellen auf besetzte Leitungen in Fernsprechwaehlanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL53023C true NL53023C (cs) |
Family
ID=7333833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL53023D NL53023C (cs) | 1937-03-16 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE716346C (cs) |
| NL (1) | NL53023C (cs) |
-
0
- NL NL53023D patent/NL53023C/xx active
-
1937
- 1937-03-16 DE DEM137498D patent/DE716346C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE716346C (de) | 1942-01-22 |