NL40979C - - Google Patents
Info
- Publication number
- NL40979C NL40979C NL40979DA NL40979C NL 40979 C NL40979 C NL 40979C NL 40979D A NL40979D A NL 40979DA NL 40979 C NL40979 C NL 40979C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES114791D DE636337C (de) | 1934-07-20 | 1934-07-20 | Einrichtung zur UEberwachung des Isolationszustandes von Fernmeldekabeln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL40979C true NL40979C (xx) |
Family
ID=7533368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL40979D NL40979C (xx) | 1934-07-20 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE636337C (xx) |
| NL (1) | NL40979C (xx) |
-
0
- NL NL40979D patent/NL40979C/xx active
-
1934
- 1934-07-20 DE DES114791D patent/DE636337C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE636337C (de) | 1936-10-09 |