NL245026A - - Google Patents
Info
- Publication number
- NL245026A NL245026A NL245026DA NL245026A NL 245026 A NL245026 A NL 245026A NL 245026D A NL245026D A NL 245026DA NL 245026 A NL245026 A NL 245026A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
- Devices For Supply Of Signal Current (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1028558 | 1958-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL245026A true NL245026A (xx) |
Family
ID=20292063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL245026D NL245026A (xx) | 1958-11-05 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3075048A (xx) |
| BE (1) | BE584229A (xx) |
| CH (1) | CH377409A (xx) |
| DE (1) | DE1105464B (xx) |
| DK (1) | DK93906C (xx) |
| ES (1) | ES252928A1 (xx) |
| FR (1) | FR1239676A (xx) |
| GB (1) | GB918275A (xx) |
| NL (1) | NL245026A (xx) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB985198A (en) * | 1961-05-11 | 1965-03-03 | Post Office | Improvements in or relating to signalling circuits |
| BE622412A (xx) * | 1961-09-13 | |||
| GB989232A (en) * | 1961-12-08 | 1965-04-14 | Post Office | Improvements in or relating to signalling circuits |
| US3210479A (en) * | 1962-08-30 | 1965-10-05 | Automatic Elect Lab | Voice-frequency selective signalling arrangement |
| US3254161A (en) * | 1963-01-17 | 1966-05-31 | North Electric Co | Ringing arrangement for substation telephone instrument |
| DE1247413B (de) * | 1964-09-30 | 1967-08-17 | Siemens Ag | Anruforgan fuer Teilnehmer-, insbesondere Fernsprechteilnehmerstationen |
| GB1128053A (en) * | 1965-07-26 | 1968-09-25 | Standard Telephones Cables Ltd | Acoustic signalling means particularly for telephone sets |
| SE339833B (xx) * | 1970-02-18 | 1971-10-25 | K Blomberg |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE465890A (xx) * | 1942-12-30 | |||
| US2392321A (en) * | 1944-05-30 | 1946-01-08 | Bell Telephone Labor Inc | Desk telephone set |
| US2910538A (en) * | 1957-06-10 | 1959-10-27 | Gen Telephone Lab Inc | Desk telephone |
| US2951910A (en) * | 1958-01-14 | 1960-09-06 | North Electric Co | Substation signalling device |
-
0
- NL NL245026D patent/NL245026A/xx unknown
-
1959
- 1959-10-26 ES ES0252928A patent/ES252928A1/es not_active Expired
- 1959-10-26 GB GB36206/59A patent/GB918275A/en not_active Expired
- 1959-10-28 US US849204A patent/US3075048A/en not_active Expired - Lifetime
- 1959-11-02 DK DK393859AA patent/DK93906C/da active
- 1959-11-02 FR FR809109A patent/FR1239676A/fr not_active Expired
- 1959-11-03 CH CH8017659A patent/CH377409A/de unknown
- 1959-11-03 BE BE584229A patent/BE584229A/fr unknown
- 1959-11-04 DE DET17426A patent/DE1105464B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB918275A (en) | 1963-02-13 |
| DK93906C (da) | 1962-07-16 |
| ES252928A1 (es) | 1960-05-01 |
| CH377409A (de) | 1964-05-15 |
| DE1105464B (de) | 1961-04-27 |
| BE584229A (fr) | 1960-03-01 |
| FR1239676A (fr) | 1960-08-26 |
| US3075048A (en) | 1963-01-22 |