DE209582C - - Google Patents
Info
- Publication number
- DE209582C DE209582C DENDAT209582D DE209582DA DE209582C DE 209582 C DE209582 C DE 209582C DE NDAT209582 D DENDAT209582 D DE NDAT209582D DE 209582D A DE209582D A DE 209582DA DE 209582 C DE209582 C DE 209582C
- Authority
- DE
- Germany
- Prior art keywords
- call
- alarm clock
- line
- called
- battery
- 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
- 238000004804 winding Methods 0.000 description 2
- 230000001960 triggered Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE209582C true DE209582C (fr) |
Family
ID=471539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT209582D Active DE209582C (fr) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE209582C (fr) |
-
0
- DE DENDAT209582D patent/DE209582C/de active Active
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