FR813539A - Appareil téléphonique à prépaiement - Google Patents
Appareil téléphonique à prépaiementInfo
- Publication number
- FR813539A FR813539A FR813539DA FR813539A FR 813539 A FR813539 A FR 813539A FR 813539D A FR813539D A FR 813539DA FR 813539 A FR813539 A FR 813539A
- Authority
- FR
- France
- Prior art keywords
- telephone device
- prepaid telephone
- prepaid
- telephone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F5/00—Coin-actuated mechanisms; Interlocks
-
- 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 Security & Cryptography (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Prepayment Telephone Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH485117X | 1935-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR813539A true FR813539A (fr) | 1937-06-03 |
Family
ID=4516424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR813539D Expired FR813539A (fr) | 1935-11-16 | 1936-11-14 | Appareil téléphonique à prépaiement |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH186683A (fr) |
| DE (1) | DE665859C (fr) |
| FR (1) | FR813539A (fr) |
| GB (1) | GB485117A (fr) |
| NL (1) | NL44301C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE857216C (de) * | 1942-12-07 | 1952-11-27 | Siemens Ag | Schaltungsanordnung in Fernsprechanlagen mit Muenzkassierern fuer Netzgruppenverkehr |
-
0
- NL NL44301D patent/NL44301C/xx active
-
1935
- 1935-11-16 CH CH186683D patent/CH186683A/de unknown
-
1936
- 1936-11-14 DE DEE48995D patent/DE665859C/de not_active Expired
- 1936-11-14 FR FR813539D patent/FR813539A/fr not_active Expired
- 1936-11-16 GB GB31297/36A patent/GB485117A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL44301C (fr) | |
| GB485117A (en) | 1938-05-16 |
| DE665859C (de) | 1938-10-07 |
| CH186683A (de) | 1936-09-30 |
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