DE252421C - - Google Patents
Info
- Publication number
- DE252421C DE252421C DENDAT252421D DE252421DA DE252421C DE 252421 C DE252421 C DE 252421C DE NDAT252421 D DENDAT252421 D DE NDAT252421D DE 252421D A DE252421D A DE 252421DA DE 252421 C DE252421 C DE 252421C
- Authority
- DE
- Germany
- Prior art keywords
- persian
- flashing
- thumb
- grooved
- persians
- 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
- G08B5/00—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied
- G08B5/40—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using smoke, fire or coloured gases
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE252421C true DE252421C (https=) |
Family
ID=510777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT252421D Active DE252421C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE252421C (https=) |
-
0
- DE DENDAT252421D patent/DE252421C/de active Active
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