FR999130A - - Google Patents
Info
- Publication number
- FR999130A FR999130A FR999130DA FR999130A FR 999130 A FR999130 A FR 999130A FR 999130D A FR999130D A FR 999130DA FR 999130 A FR999130 A FR 999130A
- 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
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR999130A true FR999130A (OSRAM) | 1952-01-25 |
Family
ID=1567100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR999130D Expired FR999130A (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR999130A (OSRAM) |
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0
- FR FR999130D patent/FR999130A/fr not_active Expired