DE141390C - - Google Patents
Info
- Publication number
- DE141390C DE141390C DENDAT141390D DE141390DA DE141390C DE 141390 C DE141390 C DE 141390C DE NDAT141390 D DENDAT141390 D DE NDAT141390D DE 141390D A DE141390D A DE 141390DA DE 141390 C DE141390 C DE 141390C
- Authority
- DE
- Germany
- Prior art keywords
- detector
- detectors
- same time
- line
- current
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Position Or Direction (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE141390C true DE141390C (en:Method) |
Family
ID=409011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT141390D Active DE141390C (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE141390C (en:Method) |
-
0
- DE DENDAT141390D patent/DE141390C/de active Active
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