DE145382C - - Google Patents
Info
- Publication number
- DE145382C DE145382C DENDAT145382D DE145382DA DE145382C DE 145382 C DE145382 C DE 145382C DE NDAT145382 D DENDAT145382 D DE NDAT145382D DE 145382D A DE145382D A DE 145382DA DE 145382 C DE145382 C DE 145382C
- Authority
- DE
- Germany
- Prior art keywords
- signal
- call
- disc
- plug
- line
- 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 OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/24—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane
- G08B5/28—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane with hinged flap or arm
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Structure Of Telephone Exchanges (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE145382C true DE145382C (forum.php) |
Family
ID=412733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT145382D Active DE145382C (forum.php) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE145382C (forum.php) |
-
0
- DE DENDAT145382D patent/DE145382C/de active Active
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