BE355278A - - Google Patents
Info
- Publication number
- BE355278A BE355278A BE355278DA BE355278A BE 355278 A BE355278 A BE 355278A BE 355278D A BE355278D A BE 355278DA BE 355278 A BE355278 A BE 355278A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
- H04M11/045—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
- Burglar Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1796358X | 1928-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE355278A true BE355278A (de) |
Family
ID=7743687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE355278D BE355278A (de) | 1928-01-10 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1796358A (de) |
| BE (1) | BE355278A (de) |
| FR (1) | FR664738A (de) |
| GB (1) | GB324713A (de) |
-
0
- BE BE355278D patent/BE355278A/xx unknown
-
1928
- 1928-11-02 GB GB31935/28A patent/GB324713A/en not_active Expired
- 1928-11-08 FR FR664738D patent/FR664738A/fr not_active Expired
- 1928-11-22 US US321177A patent/US1796358A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB324713A (en) | 1930-02-03 |
| US1796358A (en) | 1931-03-17 |
| FR664738A (fr) | 1929-09-06 |