CH162598A - Alarmvorrichtung. - Google Patents
Alarmvorrichtung.Info
- Publication number
- CH162598A CH162598A CH162598DA CH162598A CH 162598 A CH162598 A CH 162598A CH 162598D A CH162598D A CH 162598DA CH 162598 A CH162598 A CH 162598A
- Authority
- CH
- Switzerland
- Prior art keywords
- alarm device
- 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
- 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)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1930H0040230 DE567446C (de) | 1930-08-30 | 1930-08-30 | Alarmvorrichtung zur automatischen UEbermittlung eines Alarmrufes ueber die Teilnehmerleitung eines Selbstanschlussfernsprechnetzes |
CH162598T | 1931-08-28 | ||
GB25787/31A GB377489A (en) | 1930-08-30 | 1931-09-14 | Improvements in alarm devices for use in connection with telephone systems |
Publications (1)
Publication Number | Publication Date |
---|---|
CH162598A true CH162598A (de) | 1933-06-30 |
Family
ID=10233294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH162598D CH162598A (de) | 1930-08-30 | 1931-08-28 | Alarmvorrichtung. |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE382314A (en(2012)) |
CH (1) | CH162598A (en(2012)) |
DE (1) | DE567446C (en(2012)) |
FR (1) | FR722639A (en(2012)) |
GB (1) | GB377489A (en(2012)) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE896065C (de) * | 1950-06-07 | 1953-11-09 | Samuel Dunseith Mckellen | Alarmvorrichtung mit Waehlern zum selbsttaetigen Fernmeldeanschluss |
DE1035700B (de) * | 1955-09-23 | 1958-08-07 | Siemens Ag | Schaltungsanordnung zur Abgabe von Meldungen ueber Fernsprechleitungen |
-
1930
- 1930-08-30 DE DE1930H0040230 patent/DE567446C/de not_active Expired
-
1931
- 1931-08-28 CH CH162598D patent/CH162598A/de unknown
- 1931-08-28 FR FR722639D patent/FR722639A/fr not_active Expired
- 1931-08-28 BE BE382314D patent/BE382314A/xx unknown
- 1931-09-14 GB GB25787/31A patent/GB377489A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE382314A (en(2012)) | 1931-09-30 |
GB377489A (en) | 1932-07-28 |
DE567446C (de) | 1933-01-03 |
FR722639A (fr) | 1932-03-26 |
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