BE353078A - - Google Patents
Info
- Publication number
- BE353078A BE353078A BE353078DA BE353078A BE 353078 A BE353078 A BE 353078A BE 353078D A BE353078D A BE 353078DA BE 353078 A BE353078 A BE 353078A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
- H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
- H04M17/026—Constructional features
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Prepayment Telephone Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE1801293X | 1928-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE353078A true BE353078A (en:Method) | 1928-08-31 |
Family
ID=3895147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE353078D BE353078A (en:Method) | 1928-06-02 | 1928-07-26 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1801293A (en:Method) |
| BE (1) | BE353078A (en:Method) |
| FR (1) | FR676062A (en:Method) |
| GB (1) | GB316261A (en:Method) |
-
1928
- 1928-07-26 BE BE353078D patent/BE353078A/xx unknown
-
1929
- 1929-04-29 US US3?8807A patent/US1801293A/en not_active Expired - Lifetime
- 1929-06-01 FR FR676062D patent/FR676062A/fr not_active Expired
- 1929-07-15 GB GB21777/29A patent/GB316261A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB316261A (en) | 1930-10-15 |
| US1801293A (en) | 1931-04-21 |
| FR676062A (fr) | 1930-02-18 |