BE359444A - - Google Patents
Info
- Publication number
- BE359444A BE359444A BE359444DA BE359444A BE 359444 A BE359444 A BE 359444A BE 359444D A BE359444D A BE 359444DA BE 359444 A BE359444 A BE 359444A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Telephonic Communication Services (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE308811X | 1928-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE359444A true BE359444A (en:Method) |
Family
ID=20307586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE359444D BE359444A (en:Method) | 1928-03-31 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1789142A (en:Method) |
| BE (1) | BE359444A (en:Method) |
| FR (1) | FR672218A (en:Method) |
| GB (1) | GB308811A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2646473A (en) * | 1950-04-25 | 1953-07-21 | Talk O Products Inc | Manually operated selecting and controlling switch apparatus |
-
0
- BE BE359444D patent/BE359444A/xx unknown
-
1929
- 1929-03-27 GB GB9882/29A patent/GB308811A/en not_active Expired
- 1929-03-28 FR FR672218D patent/FR672218A/fr not_active Expired
- 1929-03-29 US US351017A patent/US1789142A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB308811A (en) | 1930-07-28 |
| FR672218A (fr) | 1929-12-24 |
| US1789142A (en) | 1931-01-13 |