DK77276C - Kobling til automatiske telefoncentraler til udsendelse af automatisk gentagne ringesignaler. - Google Patents
Kobling til automatiske telefoncentraler til udsendelse af automatisk gentagne ringesignaler.Info
- Publication number
- DK77276C DK77276C DK291551AA DK291551A DK77276C DK 77276 C DK77276 C DK 77276C DK 291551A A DK291551A A DK 291551AA DK 291551 A DK291551 A DK 291551A DK 77276 C DK77276 C DK 77276C
- Authority
- DK
- Denmark
- Prior art keywords
- ringtones
- coupling
- sending out
- out automatically
- automatic telephone
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE295549X | 1950-10-06 | ||
| US251486A US2815404A (en) | 1950-10-06 | 1951-10-16 | Connection for automatic ring signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK77276C true DK77276C (da) | 1954-03-22 |
Family
ID=26656230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK291551AA DK77276C (da) | 1950-10-06 | 1951-09-29 | Kobling til automatiske telefoncentraler til udsendelse af automatisk gentagne ringesignaler. |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US2815404A (da) |
| BE (1) | BE506244A (da) |
| CH (1) | CH295549A (da) |
| DE (1) | DE892774C (da) |
| DK (1) | DK77276C (da) |
| FR (1) | FR1048563A (da) |
| GB (1) | GB708450A (da) |
| NL (2) | NL82979C (da) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE547676A (da) * | 1955-05-18 | |||
| NL262148A (da) * | 1961-03-08 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2410866A (en) * | 1944-04-17 | 1946-11-12 | Automatic Elect Lab | Telephone system |
-
0
- BE BE506244D patent/BE506244A/xx unknown
- NL NL7006793.A patent/NL164412B/xx unknown
- NL NL82979D patent/NL82979C/xx active
-
1951
- 1951-09-24 CH CH295549D patent/CH295549A/de unknown
- 1951-09-29 DK DK291551AA patent/DK77276C/da active
- 1951-10-04 DE DET4982A patent/DE892774C/de not_active Expired
- 1951-10-05 FR FR1048563D patent/FR1048563A/fr not_active Expired
- 1951-10-05 GB GB23286/51A patent/GB708450A/en not_active Expired
- 1951-10-16 US US251486A patent/US2815404A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB708450A (en) | 1954-05-05 |
| NL82979C (da) | |
| CH295549A (de) | 1953-12-31 |
| BE506244A (da) | |
| US2815404A (en) | 1957-12-03 |
| NL164412B (nl) | |
| DE892774C (de) | 1953-10-12 |
| FR1048563A (fr) | 1953-12-22 |
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