NL35409C - - Google Patents
Info
- Publication number
- NL35409C NL35409C NL35409DA NL35409C NL 35409 C NL35409 C NL 35409C NL 35409D A NL35409D A NL 35409DA NL 35409 C NL35409 C NL 35409C
- 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
- H04M17/023—Circuit arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE392079X | 1931-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL35409C true NL35409C (en:Method) |
Family
ID=6383530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL35409D NL35409C (en:Method) | 1931-12-05 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB392079A (en:Method) |
| NL (1) | NL35409C (en:Method) |
-
0
- NL NL35409D patent/NL35409C/xx active
-
1932
- 1932-10-28 GB GB30318/32A patent/GB392079A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB392079A (en) | 1933-05-11 |