NL22554C - - Google Patents
Info
- Publication number
- NL22554C NL22554C NL22554DA NL22554C NL 22554 C NL22554 C NL 22554C NL 22554D A NL22554D A NL 22554DA NL 22554 C NL22554 C NL 22554C
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire Alarms (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE277362X | 1926-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL22554C true NL22554C (xx) |
Family
ID=20306920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL22554D NL22554C (xx) | 1926-09-11 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US1977121A (xx) |
| BE (1) | BE345223A (xx) |
| DE (1) | DE574151C (xx) |
| FR (1) | FR640950A (xx) |
| GB (1) | GB277362A (xx) |
| NL (1) | NL22554C (xx) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2479621A (en) * | 1945-03-05 | 1949-08-23 | Jackson Harry | Magnetically operated switch |
| US2492043A (en) * | 1948-04-03 | 1949-12-20 | Protectowire Co Of Maine | Fire alarm system |
| NL85577C (xx) * | 1950-12-04 | |||
| US2724105A (en) * | 1952-05-28 | 1955-11-15 | Ekman Olof Ingemar Harald | Electric control or alarm systems |
| US3044050A (en) * | 1959-08-17 | 1962-07-10 | Mc Graw Edison Co | Fire detection system |
-
0
- NL NL22554D patent/NL22554C/xx active
- BE BE345223D patent/BE345223A/xx unknown
-
1927
- 1927-09-01 US US216978A patent/US1977121A/en not_active Expired - Lifetime
- 1927-09-07 DE DET33950D patent/DE574151C/de not_active Expired
- 1927-09-09 GB GB23786/27A patent/GB277362A/en not_active Expired
- 1927-09-09 FR FR640950D patent/FR640950A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB277362A (en) | 1928-12-10 |
| BE345223A (xx) | |
| DE574151C (de) | 1933-04-10 |
| FR640950A (fr) | 1928-07-24 |
| US1977121A (en) | 1934-10-16 |