BE420180A - - Google Patents
Info
- Publication number
- BE420180A BE420180A BE420180DA BE420180A BE 420180 A BE420180 A BE 420180A BE 420180D A BE420180D A BE 420180DA BE 420180 A BE420180 A BE 420180A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT488442X | 1936-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE420180A true BE420180A (en:Method) |
Family
ID=3675082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE420180D BE420180A (en:Method) | 1936-02-22 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE420180A (en:Method) |
| FR (1) | FR818193A (en:Method) |
| GB (1) | GB488442A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2709801A (en) * | 1952-03-31 | 1955-05-31 | William S Sprague | Blackout indicator |
-
0
- BE BE420180D patent/BE420180A/xx unknown
-
1937
- 1937-02-22 GB GB5320/37A patent/GB488442A/en not_active Expired
- 1937-02-22 FR FR818193D patent/FR818193A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR818193A (fr) | 1937-09-20 |
| GB488442A (en) | 1938-07-07 |