NL23998C - - Google Patents
Info
- Publication number
- NL23998C NL23998C NL23998DA NL23998C NL 23998 C NL23998 C NL 23998C NL 23998D A NL23998D A NL 23998DA NL 23998 C NL23998 C NL 23998C
- 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)
- Prepayment Telephone Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US282351XA | 1926-12-14 | 1926-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL23998C true NL23998C (xx) |
Family
ID=21842294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL23998D NL23998C (xx) | 1926-12-14 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US1730422A (xx) |
| BE (1) | BE346593A (xx) |
| DE (1) | DE543354C (xx) |
| FR (1) | FR637231A (xx) |
| GB (1) | GB282351A (xx) |
| NL (1) | NL23998C (xx) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE515524A (xx) * | ||||
| BE440184A (xx) * | 1939-08-04 | |||
| US2460936A (en) * | 1946-06-14 | 1949-02-08 | American Telephone & Telegraph | Portable coin collector for telephone systems |
| US2897271A (en) * | 1950-01-28 | 1959-07-28 | Siemens Ag | Coin return in telephone pay stations |
| US2750447A (en) * | 1951-05-31 | 1956-06-12 | Automatic Elect Lab | Paystation telephone system |
| US3455425A (en) * | 1967-11-21 | 1969-07-15 | Blackstone Corp | Coin-operated switches and the like |
-
0
- BE BE346593D patent/BE346593A/xx unknown
- NL NL23998D patent/NL23998C/xx active
- US US1730422D patent/US1730422A/en not_active Expired - Lifetime
-
1927
- 1927-05-10 DE DEH111353D patent/DE543354C/de not_active Expired
- 1927-07-08 FR FR637231D patent/FR637231A/fr not_active Expired
- 1927-10-11 GB GB26941/27A patent/GB282351A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1730422A (en) | 1929-10-08 |
| DE543354C (de) | 1932-02-04 |
| BE346593A (xx) | |
| FR637231A (fr) | 1928-04-25 |
| GB282351A (en) | 1929-01-11 |