NL46394C - - Google Patents
Info
- Publication number
- NL46394C NL46394C NL46394DA NL46394C NL 46394 C NL46394 C NL 46394C NL 46394D A NL46394D A NL 46394DA NL 46394 C NL46394 C NL 46394C
- 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 |
|---|---|---|---|
| DE470891X | 1936-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL46394C true NL46394C (en:Method) |
Family
ID=6541197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL46394D NL46394C (en:Method) | 1936-03-14 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2168864A (en:Method) |
| GB (1) | GB470891A (en:Method) |
| NL (1) | NL46394C (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2897271A (en) * | 1950-01-28 | 1959-07-28 | Siemens Ag | Coin return in telephone pay stations |
| US3409739A (en) * | 1965-03-09 | 1968-11-05 | Bell Telephone Labor Inc | Automatic coin return for telephone paystations |
| GB2432993A (en) * | 2005-12-01 | 2007-06-06 | Marconi Comm Ltd | Combating fraud in telecommunication systems |
-
0
- NL NL46394D patent/NL46394C/xx active
-
1936
- 1936-10-29 GB GB29450/36A patent/GB470891A/en not_active Expired
-
1937
- 1937-02-25 US US127658A patent/US2168864A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2168864A (en) | 1939-08-08 |
| GB470891A (en) | 1937-08-24 |