NL52169C - - Google Patents
Info
- Publication number
- NL52169C NL52169C NL52169DA NL52169C NL 52169 C NL52169 C NL 52169C NL 52169D A NL52169D A NL 52169DA NL 52169 C NL52169 C NL 52169C
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE215254X | 1938-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL52169C true NL52169C (https=) |
Family
ID=5823036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL52169D NL52169C (https=) | 1938-12-10 |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH215254A (https=) |
| FR (1) | FR865034A (https=) |
| NL (1) | NL52169C (https=) |
-
0
- NL NL52169D patent/NL52169C/xx active
-
1939
- 1939-09-13 CH CH215254D patent/CH215254A/de unknown
-
1940
- 1940-04-18 FR FR865034D patent/FR865034A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH215254A (de) | 1941-06-15 |
| FR865034A (fr) | 1941-05-12 |