DE179549C - - Google Patents
Info
- Publication number
- DE179549C DE179549C DENDAT179549D DE179549DA DE179549C DE 179549 C DE179549 C DE 179549C DE NDAT179549 D DENDAT179549 D DE NDAT179549D DE 179549D A DE179549D A DE 179549DA DE 179549 C DE179549 C DE 179549C
- Authority
- DE
- Germany
- Prior art keywords
- relay
- call
- line
- battery
- lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE179549C true DE179549C (https=) |
Family
ID=443872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT179549D Active DE179549C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE179549C (https=) |
-
0
- DE DENDAT179549D patent/DE179549C/de active Active
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