NL51409C - - Google Patents
Info
- Publication number
- NL51409C NL51409C NL86954A NL86954A NL51409C NL 51409 C NL51409 C NL 51409C NL 86954 A NL86954 A NL 86954A NL 86954 A NL86954 A NL 86954A NL 51409 C NL51409 C NL 51409C
- 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
- H04M17/026—Constructional features
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 |
|---|---|---|---|
| DE1937T0049069 DE702244C (en) | 1937-08-18 | 1937-08-18 | Coin operated telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL51409C true NL51409C (en) | 1941-11-15 |
Family
ID=5774198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL86954A NL51409C (en) | 1937-08-18 | 1938-03-18 |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH202986A (en) |
| DE (1) | DE702244C (en) |
| FR (1) | FR835813A (en) |
| GB (1) | GB496356A (en) |
| NL (1) | NL51409C (en) |
-
1937
- 1937-08-18 DE DE1937T0049069 patent/DE702244C/en not_active Expired
-
1938
- 1938-03-07 GB GB715238A patent/GB496356A/en not_active Expired
- 1938-03-18 NL NL86954A patent/NL51409C/xx active
- 1938-03-18 CH CH202986D patent/CH202986A/en unknown
- 1938-03-28 FR FR835813D patent/FR835813A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH202986A (en) | 1939-02-15 |
| FR835813A (en) | 1939-01-04 |
| GB496356A (en) | 1938-11-29 |
| DE702244C (en) | 1941-02-03 |