FR745289A - - Google Patents
Info
- Publication number
- FR745289A FR745289A FR745289DA FR745289A FR 745289 A FR745289 A FR 745289A FR 745289D A FR745289D A FR 745289DA FR 745289 A FR745289 A FR 745289A
- 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
- H04M1/02—Constructional features of telephone sets
- H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR745289A true FR745289A (de) | 1933-05-06 |
Family
ID=1549274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR745289D Expired FR745289A (de) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR745289A (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE935552C (de) * | 1951-11-22 | 1955-11-24 | Bruno Boico | Beleuchtungseinrichtung fuer Fernsprechapparate |
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0
- FR FR745289D patent/FR745289A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE935552C (de) * | 1951-11-22 | 1955-11-24 | Bruno Boico | Beleuchtungseinrichtung fuer Fernsprechapparate |