BE468430A - - Google Patents
Info
- Publication number
- BE468430A BE468430A BE468430DA BE468430A BE 468430 A BE468430 A BE 468430A BE 468430D A BE468430D A BE 468430DA BE 468430 A BE468430 A BE 468430A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- 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
- H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Interface Circuits In Exchanges (AREA)
- Relay Circuits (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5514/41A GB549047A (en) | 1941-04-28 | 1941-04-28 | Improvements in electrical signalling systems utilising trains of impulses for control purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE468430A true BE468430A (fr) |
Family
ID=9797640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE468430D BE468430A (fr) | 1941-04-28 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2334591A (fr) |
| BE (1) | BE468430A (fr) |
| CH (1) | CH241317A (fr) |
| DE (1) | DE842361C (fr) |
| FR (1) | FR907461A (fr) |
| GB (3) | GB550350A (fr) |
| NL (2) | NL106092C (fr) |
-
0
- BE BE468430D patent/BE468430A/xx unknown
- NL NL64857D patent/NL64857C/xx active
- NL NL106092D patent/NL106092C/xx active
-
1941
- 1941-04-28 GB GB16350/42A patent/GB550350A/en not_active Expired
- 1941-04-28 GB GB11926/42A patent/GB549074A/en not_active Expired
- 1941-04-28 GB GB5514/41A patent/GB549047A/en not_active Expired
-
1942
- 1942-03-14 US US434762A patent/US2334591A/en not_active Expired - Lifetime
- 1942-03-26 CH CH241317D patent/CH241317A/de unknown
- 1942-04-28 FR FR907461D patent/FR907461A/fr not_active Expired
-
1949
- 1949-01-01 DE DEP29260A patent/DE842361C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE842361C (de) | 1952-06-26 |
| GB550350A (en) | 1943-01-04 |
| NL106092C (fr) | |
| US2334591A (en) | 1943-11-16 |
| GB549047A (en) | 1942-11-04 |
| NL64857C (fr) | |
| FR907461A (fr) | 1946-03-13 |
| CH241317A (de) | 1946-02-28 |
| GB549074A (en) | 1942-11-04 |