FR615052A - - Google Patents
Info
- Publication number
- FR615052A FR615052A FR615052DA FR615052A FR 615052 A FR615052 A FR 615052A FR 615052D A FR615052D A FR 615052DA FR 615052 A FR615052 A FR 615052A
- 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
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR615052A true FR615052A (en) | 1926-12-29 |
Family
ID=1540995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR615052D Expired FR615052A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR615052A (en) |
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0
- FR FR615052D patent/FR615052A/fr not_active Expired