LU44754A1 - - Google Patents
Info
- Publication number
- LU44754A1 LU44754A1 LU44754DA LU44754A1 LU 44754 A1 LU44754 A1 LU 44754A1 LU 44754D A LU44754D A LU 44754DA LU 44754 A1 LU44754 A1 LU 44754A1
- Authority
- LU
- Luxembourg
Links
Classifications
-
- 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
-
- 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
- G08B25/04—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 using a single signalling line, e.g. in a closed loop
- G08B25/045—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 using a single signalling line, e.g. in a closed loop with sensing devices and central station in a closed loop, e.g. McCullough loop
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU44754 | 1963-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU44754A1 true LU44754A1 (en) | 1965-05-05 |
Family
ID=19723548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU44754D LU44754A1 (en) | 1963-11-05 | 1963-11-05 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3430199A (en) |
| CH (1) | CH446130A (en) |
| FR (1) | FR1420443A (en) |
| GB (1) | GB1081974A (en) |
| LU (1) | LU44754A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3846794A (en) * | 1973-03-15 | 1974-11-05 | Baker Ind Inc | Alarm retransmission system |
| FR2455328A1 (en) * | 1979-04-24 | 1980-11-21 | Deschaume Patrick | Independent burglar alarm circuit - includes both normally open and normally closed contacts in circuit modules which may be looped together to extend system |
| EP0356530B1 (en) * | 1988-07-16 | 1993-05-12 | Honeywell Ag | Dialogue system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2682046A (en) * | 1950-08-04 | 1954-06-22 | Schenck Gmbh Carl | Pulse producing control apparatus |
| GB972570A (en) * | 1962-07-31 | 1964-10-14 | Bell Punch Co Ltd | Improvements in or relating to calculating machines |
-
1963
- 1963-11-05 LU LU44754D patent/LU44754A1/xx unknown
-
1964
- 1964-10-15 CH CH1338064A patent/CH446130A/en unknown
- 1964-10-15 FR FR991542A patent/FR1420443A/en not_active Expired
- 1964-10-26 US US406388A patent/US3430199A/en not_active Expired - Lifetime
- 1964-11-03 GB GB44737/64A patent/GB1081974A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH446130A (en) | 1967-10-31 |
| FR1420443A (en) | 1965-12-10 |
| GB1081974A (en) | 1967-09-06 |
| US3430199A (en) | 1969-02-25 |