NL190903A - - Google Patents
Info
- Publication number
- NL190903A NL190903A NL190903DA NL190903A NL 190903 A NL190903 A NL 190903A NL 190903D A NL190903D A NL 190903DA NL 190903 A NL190903 A NL 190903A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/10—Providing fault- or trouble-signals
-
- 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)
- Monitoring And Testing Of Exchanges (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK776078X | 1953-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL190903A true NL190903A (fr) |
Family
ID=8152739
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL190903D NL190903A (fr) | 1953-09-19 | ||
| NL88907D NL88907C (fr) | 1953-09-19 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL88907D NL88907C (fr) | 1953-09-19 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE531937A (fr) |
| DE (1) | DE1018931B (fr) |
| FR (1) | FR1113111A (fr) |
| GB (1) | GB776078A (fr) |
| NL (2) | NL88907C (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1013706B (de) * | 1956-01-14 | 1957-08-14 | Telefonbau & Normalzeit Gmbh | Schaltungsanordnung zur UEbertragung von Meldungen ueber besprochene Fernsprechanschlussleitungen |
| DE1233024B (de) * | 1963-05-03 | 1967-01-26 | Siemens Ag | Einrichtung zur UEbertragung von Signalen ueber ein Fernsprechnetz |
| DE1265793B (de) * | 1966-10-22 | 1968-04-11 | August Woerl | Alarmanlage zur selbsttaetigen UEbertragung einer Nachricht ueber eine Fernsprechleitung |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE661785C (de) * | 1927-07-20 | 1938-06-28 | Siemens & Halske Akt Ges | Schaltungsanordnung zur UEbertragung von regelmaessigen Fortschaltestromstoessen fuer Uhren und von Alarmmeldungen |
| DE655938C (de) * | 1927-12-20 | 1938-01-31 | Siemens & Halske Akt Ges | Schaltungsanordnung fuer Nachrichtenuebertragung ueber Fernsprechleitungen |
| DE730913C (de) * | 1941-04-30 | 1943-01-28 | Siemens Ag | Meldeanlage fuer die UEbermittlung von Meldungen verschiedener Bedeutung und fuer die Herstellung von Fernsprechverbindungen ueber Schleifenleitungen |
| DE805287C (de) * | 1950-04-02 | 1951-05-15 | Telefonbau & Normalzeit Gmbh | Schaltungsanordnung zur UEbertragung von Meldungen ueber besprochene Fernsprechleitungen |
-
0
- NL NL190903D patent/NL190903A/xx unknown
- NL NL88907D patent/NL88907C/xx active
- BE BE531937D patent/BE531937A/xx unknown
-
1954
- 1954-09-13 DE DED18665A patent/DE1018931B/de active Pending
- 1954-09-18 FR FR1113111D patent/FR1113111A/fr not_active Expired
- 1954-09-20 GB GB27182/54A patent/GB776078A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE531937A (fr) | |
| NL88907C (fr) | |
| GB776078A (en) | 1957-06-05 |
| DE1018931B (de) | 1957-11-07 |
| FR1113111A (fr) | 1956-03-23 |