BE774634A - Systeme d'alarme par circuit telephoniques - Google Patents
Systeme d'alarme par circuit telephoniquesInfo
- Publication number
- BE774634A BE774634A BE774634A BE774634A BE774634A BE 774634 A BE774634 A BE 774634A BE 774634 A BE774634 A BE 774634A BE 774634 A BE774634 A BE 774634A BE 774634 A BE774634 A BE 774634A
- Authority
- BE
- Belgium
- Prior art keywords
- alarm system
- telephone circuit
- telephone
- circuit
- alarm
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8726770A | 1970-11-05 | 1970-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE774634A true BE774634A (fr) | 1972-02-14 |
Family
ID=22204134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE774634A BE774634A (fr) | 1970-11-05 | 1971-10-28 | Systeme d'alarme par circuit telephoniques |
Country Status (10)
| Country | Link |
|---|---|
| AU (1) | AU464402B2 (enExample) |
| BE (1) | BE774634A (enExample) |
| CA (1) | CA932884A (enExample) |
| CH (1) | CH555574A (enExample) |
| DE (1) | DE2155156A1 (enExample) |
| ES (1) | ES396721A1 (enExample) |
| FR (1) | FR2112461B1 (enExample) |
| GB (1) | GB1375579A (enExample) |
| IT (1) | IT939691B (enExample) |
| NL (1) | NL7115039A (enExample) |
-
1971
- 1971-10-13 FR FR7136686A patent/FR2112461B1/fr not_active Expired
- 1971-10-25 CH CH1548071A patent/CH555574A/fr not_active IP Right Cessation
- 1971-10-26 AU AU35000/71A patent/AU464402B2/en not_active Expired
- 1971-10-28 BE BE774634A patent/BE774634A/xx unknown
- 1971-10-29 IT IT5377971A patent/IT939691B/it active
- 1971-11-01 NL NL7115039A patent/NL7115039A/xx unknown
- 1971-11-04 CA CA126864A patent/CA932884A/en not_active Expired
- 1971-11-04 GB GB5122671A patent/GB1375579A/en not_active Expired
- 1971-11-05 ES ES396721A patent/ES396721A1/es not_active Expired
- 1971-11-05 DE DE19712155156 patent/DE2155156A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL7115039A (enExample) | 1972-05-09 |
| AU3500071A (en) | 1973-05-03 |
| AU464402B2 (en) | 1975-08-28 |
| GB1375579A (enExample) | 1974-11-27 |
| CA932884A (en) | 1973-08-28 |
| FR2112461B1 (enExample) | 1976-03-26 |
| CH555574A (fr) | 1974-10-31 |
| IT939691B (it) | 1973-02-10 |
| FR2112461A1 (enExample) | 1972-06-16 |
| ES396721A1 (es) | 1974-05-16 |
| DE2155156A1 (de) | 1972-05-10 |
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