NL51758C - - Google Patents
Info
- Publication number
- NL51758C NL51758C NL51758DA NL51758C NL 51758 C NL51758 C NL 51758C NL 51758D A NL51758D A NL 51758DA NL 51758 C NL51758 C NL 51758C
- Authority
- NL
- Netherlands
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE499270X | 1937-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL51758C true NL51758C (en:Method) |
Family
ID=6545438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL51758D NL51758C (en:Method) | 1937-12-24 |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR838943A (en:Method) |
| GB (1) | GB499270A (en:Method) |
| NL (1) | NL51758C (en:Method) |
-
0
- NL NL51758D patent/NL51758C/xx active
-
1938
- 1938-06-07 GB GB16924/38A patent/GB499270A/en not_active Expired
- 1938-06-07 FR FR838943D patent/FR838943A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR838943A (fr) | 1939-03-20 |
| GB499270A (en) | 1939-01-20 |