BE366860A - - Google Patents
Info
- Publication number
- BE366860A BE366860A BE366860DA BE366860A BE 366860 A BE366860 A BE 366860A BE 366860D A BE366860D A BE 366860DA BE 366860 A BE366860 A BE 366860A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Structure Of Telephone Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1819685X | 1929-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE366860A true BE366860A (https=) | 1930-02-28 |
Family
ID=20423702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE366860D BE366860A (https=) | 1929-01-12 | 1930-01-11 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1819685A (https=) |
| BE (1) | BE366860A (https=) |
| FR (1) | FR687997A (https=) |
| GB (1) | GB360354A (https=) |
-
1930
- 1930-01-03 US US418380A patent/US1819685A/en not_active Expired - Lifetime
- 1930-01-10 FR FR687997D patent/FR687997A/fr not_active Expired
- 1930-01-11 BE BE366860D patent/BE366860A/xx unknown
- 1930-04-22 GB GB1096/30A patent/GB360354A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB360354A (en) | 1931-10-22 |
| FR687997A (fr) | 1930-08-18 |
| US1819685A (en) | 1931-08-18 |