DE234892C - - Google Patents
Info
- Publication number
- DE234892C DE234892C DENDAT234892D DE234892DA DE234892C DE 234892 C DE234892 C DE 234892C DE NDAT234892 D DENDAT234892 D DE NDAT234892D DE 234892D A DE234892D A DE 234892DA DE 234892 C DE234892 C DE 234892C
- Authority
- DE
- Germany
- Prior art keywords
- clock
- alarm
- room
- contacts
- rooms
- 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
- 239000002184 metal Substances 0.000 description 3
- 229930091051 Arenine Natural products 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
- G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
- G04C21/32—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE234892C true DE234892C (cg-RX-API-DMAC7.html) |
Family
ID=494723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT234892D Active DE234892C (cg-RX-API-DMAC7.html) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE234892C (cg-RX-API-DMAC7.html) |
-
0
- DE DENDAT234892D patent/DE234892C/de active Active
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