FR769840A - - Google Patents
Info
- Publication number
- FR769840A FR769840A FR769840DA FR769840A FR 769840 A FR769840 A FR 769840A FR 769840D A FR769840D A FR 769840DA FR 769840 A FR769840 A FR 769840A
- Authority
- FR
- France
- 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
- 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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR769840A true FR769840A (de) | 1934-08-31 |
Family
ID=1551936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR769840D Expired FR769840A (de) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR769840A (de) |
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0
- FR FR769840D patent/FR769840A/fr not_active Expired