FR999091A - - Google Patents
Info
- Publication number
- FR999091A FR999091A FR999091DA FR999091A FR 999091 A FR999091 A FR 999091A FR 999091D A FR999091D A FR 999091DA FR 999091 A FR999091 A FR 999091A
- 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
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR999091A true FR999091A (it) | 1952-01-25 |
Family
ID=1567063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR999091D Expired FR999091A (it) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR999091A (it) |
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0
- FR FR999091D patent/FR999091A/fr not_active Expired