LU54679A1 - - Google Patents
Info
- Publication number
- LU54679A1 LU54679A1 LU54679DA LU54679A1 LU 54679 A1 LU54679 A1 LU 54679A1 LU 54679D A LU54679D A LU 54679DA LU 54679 A1 LU54679 A1 LU 54679A1
- Authority
- LU
- Luxembourg
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
-
- 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
- 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
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Alarm Systems (AREA)
- Fire Alarms (AREA)
- Fire-Detection Mechanisms (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE653696A BE653696A (xx) | 1964-09-29 | 1964-09-29 | |
| BE689837 | 1966-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU54679A1 true LU54679A1 (xx) | 1967-12-18 |
Family
ID=25656021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU54679D LU54679A1 (xx) | 1964-09-29 | 1967-10-16 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3503067A (xx) |
| BE (1) | BE689837A (xx) |
| DE (1) | DE1283713B (xx) |
| GB (1) | GB1201163A (xx) |
| LU (1) | LU54679A1 (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732439A (en) * | 1969-11-28 | 1973-05-08 | N Calvin | Pulse producing circuit particularly adapted for button type telephones |
| JPS5136119B1 (xx) * | 1971-04-15 | 1976-10-06 | ||
| US4001776A (en) * | 1975-08-04 | 1977-01-04 | General Motors Corporation | Multiple indication display |
| US4095220A (en) * | 1976-08-18 | 1978-06-13 | Sadler Joe A | Alarm detection and identification system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE160097C (xx) * | ||||
| US3047843A (en) * | 1957-02-15 | 1962-07-31 | Rca Corp | Monitoring circuits |
| NL131030C (xx) * | 1959-02-17 | |||
| FR1265919A (fr) * | 1960-05-24 | 1961-07-07 | Cie Constr Gros Mat Electromec | Perfectionnement aux systèmes automatiques de signalisation des défauts |
| US3147464A (en) * | 1961-10-16 | 1964-09-01 | Warren L Spielman | First-out annunclator having input and supply control of indicator switching means |
| NL276365A (xx) * | 1962-03-23 |
-
1966
- 1966-11-17 BE BE689837D patent/BE689837A/xx unknown
-
1967
- 1967-10-16 LU LU54679D patent/LU54679A1/xx unknown
- 1967-11-10 GB GB51304/67A patent/GB1201163A/en not_active Expired
- 1967-11-10 DE DEE35145A patent/DE1283713B/de active Pending
- 1967-11-13 US US682107A patent/US3503067A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1283713B (de) | 1968-11-21 |
| BE689837A (xx) | 1967-05-02 |
| GB1201163A (en) | 1970-08-05 |
| US3503067A (en) | 1970-03-24 |