NL66024C - - Google Patents
Info
- Publication number
- NL66024C NL66024C NL66024DA NL66024C NL 66024 C NL66024 C NL 66024C NL 66024D A NL66024D A NL 66024DA NL 66024 C NL66024 C NL 66024C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
- H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Devices For Supply Of Signal Current (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR992238T | 1944-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL66024C true NL66024C (pt) |
Family
ID=9554619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL66024D NL66024C (pt) | 1944-06-02 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2563311A (pt) |
| BE (1) | BE466149A (pt) |
| CH (1) | CH251259A (pt) |
| FR (1) | FR992238A (pt) |
| GB (1) | GB616297A (pt) |
| NL (1) | NL66024C (pt) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2816962A (en) * | 1954-11-10 | 1957-12-17 | T S Skillman And Company Pty L | Steady-state signalling using alternating currents |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR311410A (pt) * | 1928-05-12 | |||
| DE621696C (de) * | 1929-08-20 | 1935-11-12 | Ericsson Telefon Ab L M | Schaltungsanordnung zur induktiven UEbertragung von Gleichstromstoessen |
| US1906338A (en) * | 1930-04-23 | 1933-05-02 | Ass Telephone & Telegraph Co | Telephone system |
| DE592681C (de) * | 1931-03-02 | 1934-02-12 | Siemens & Halske Akt Ges | Schaltungsanordnung zur Stromstossuebertragung in Fernsprechanlagen |
| GB482014A (en) * | 1937-02-26 | 1938-03-22 | Siemens Brothers & Co Ltd | Improvements relating to telephone systems |
| GB498310A (en) * | 1937-07-05 | 1939-01-05 | Automatic Telephone & Elect | Improvements in or relating to telephone or like systems |
| BE468834A (pt) * | 1940-08-06 | |||
| US2292371A (en) * | 1941-07-19 | 1942-08-11 | Bell Telephone Labor Inc | Repeater circuit |
-
0
- NL NL66024D patent/NL66024C/xx active
-
1944
- 1944-06-02 FR FR992238D patent/FR992238A/fr not_active Expired
-
1945
- 1945-10-08 CH CH251259D patent/CH251259A/fr unknown
-
1946
- 1946-04-25 GB GB12535/46A patent/GB616297A/en not_active Expired
- 1946-05-20 US US671032A patent/US2563311A/en not_active Expired - Lifetime
- 1946-06-22 BE BE466149T patent/BE466149A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE466149A (pt) | 1946-07-31 |
| FR992238A (fr) | 1951-10-16 |
| CH251259A (fr) | 1947-10-15 |
| GB616297A (en) | 1949-01-19 |
| US2563311A (en) | 1951-08-07 |