BE450637A - - Google Patents
Info
- Publication number
- BE450637A BE450637A BE450637DA BE450637A BE 450637 A BE450637 A BE 450637A BE 450637D A BE450637D A BE 450637DA BE 450637 A BE450637 A BE 450637A
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE236495X | 1942-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE450637A true BE450637A (pm) |
Family
ID=5902133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE450637D BE450637A (pm) | 1942-04-23 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE450637A (pm) |
| CH (1) | CH236495A (pm) |
| FR (1) | FR894150A (pm) |
-
0
- BE BE450637D patent/BE450637A/xx unknown
-
1943
- 1943-04-15 CH CH236495D patent/CH236495A/de unknown
- 1943-04-21 FR FR894150D patent/FR894150A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH236495A (de) | 1945-02-15 |
| FR894150A (fr) | 1944-12-14 |