NL278487A - - Google Patents
Info
- Publication number
- NL278487A NL278487A NL278487DA NL278487A NL 278487 A NL278487 A NL 278487A NL 278487D A NL278487D A NL 278487DA NL 278487 A NL278487 A NL 278487A
- 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)
- Prepayment Telephone Systems (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL278487 | 1962-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL278487A true NL278487A (en:Method) |
Family
ID=19753828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL278487D NL278487A (en:Method) | 1962-05-16 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3296375A (en:Method) |
| BE (1) | BE632404A (en:Method) |
| NL (1) | NL278487A (en:Method) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1349373A (en) * | 1916-12-15 | 1920-08-10 | Automatic Electric Co | Measured-service telephone system |
| US2066391A (en) * | 1930-12-22 | 1937-01-05 | Associated Telephone Utilities | Pay telephone station |
| US2583783A (en) * | 1948-02-03 | 1952-01-29 | Automatic Elect Lab | Pay station circuits for automatic telephone systems |
-
0
- BE BE632404D patent/BE632404A/xx unknown
- NL NL278487D patent/NL278487A/xx unknown
-
1963
- 1963-05-09 US US279166A patent/US3296375A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US3296375A (en) | 1967-01-03 |
| BE632404A (en:Method) |