NL25670C - - Google Patents
Info
- Publication number
- NL25670C NL25670C NL25670DA NL25670C NL 25670 C NL25670 C NL 25670C NL 25670D A NL25670D A NL 25670DA NL 25670 C NL25670 C NL 25670C
- 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
- H04M17/026—Constructional features
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 |
|---|---|---|---|
| DE653185X | 1927-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL25670C true NL25670C (en:Method) |
Family
ID=6581787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL25670D NL25670C (en:Method) | 1927-12-05 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE350727A (en:Method) |
| FR (1) | FR653185A (en:Method) |
| NL (1) | NL25670C (en:Method) |
-
0
- BE BE350727D patent/BE350727A/xx unknown
- NL NL25670D patent/NL25670C/xx active
-
1928
- 1928-04-21 FR FR653185D patent/FR653185A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE350727A (en:Method) | |
| FR653185A (fr) | 1929-03-18 |