BE435409A - - Google Patents
Info
- Publication number
- BE435409A BE435409A BE435409DA BE435409A BE 435409 A BE435409 A BE 435409A BE 435409D A BE435409D A BE 435409DA BE 435409 A BE435409 A BE 435409A
- 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)
- Emergency Alarm Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2069538A GB516192A (en) | 1938-07-12 | 1938-07-12 | Improvements in and relating to electric alarm systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE435409A true BE435409A (zh) |
Family
ID=10150142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE435409D BE435409A (zh) | 1938-07-12 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE435409A (zh) |
| FR (1) | FR857679A (zh) |
| GB (1) | GB516192A (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109658671A (zh) * | 2018-12-13 | 2019-04-19 | 中国电子科技集团公司第四十研究所 | 一种医用电器设备听觉报警系统及方法 |
-
0
- BE BE435409D patent/BE435409A/xx unknown
-
1938
- 1938-07-12 GB GB2069538A patent/GB516192A/en not_active Expired
-
1939
- 1939-07-11 FR FR857679D patent/FR857679A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB516192A (en) | 1939-12-27 |
| FR857679A (fr) | 1940-09-24 |