BE711894A - - Google Patents
Info
- Publication number
- BE711894A BE711894A BE711894DA BE711894A BE 711894 A BE711894 A BE 711894A BE 711894D A BE711894D A BE 711894DA BE 711894 A BE711894 A BE 711894A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
-
- 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
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62211867A | 1967-03-10 | 1967-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE711894A true BE711894A (en)van) | 1968-07-15 |
Family
ID=24493011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE711894D BE711894A (en)van) | 1967-03-10 | 1968-03-08 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3478352A (en)van) |
| BE (1) | BE711894A (en)van) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3550120A (en) * | 1968-12-09 | 1970-12-22 | Honeywell Inc | Control apparatus |
| US3641570A (en) * | 1969-04-02 | 1972-02-08 | Francis T Thompson | Alarm system |
| US3699569A (en) * | 1972-01-28 | 1972-10-17 | Minnesota Mining & Mfg | Security system for indicating fire, intrusion or the like |
| US4716401A (en) * | 1985-09-19 | 1987-12-29 | Deere & Company | Tamper-resistant supervisory system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3021514A (en) * | 1958-03-27 | 1962-02-13 | Itt | Voltage comparator |
| US3423748A (en) * | 1965-10-20 | 1969-01-21 | Mosler Research Products Inc | Line supervisory circuit |
-
1967
- 1967-03-10 US US622118A patent/US3478352A/en not_active Expired - Lifetime
-
1968
- 1968-03-08 BE BE711894D patent/BE711894A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3478352A (en) | 1969-11-11 |