FR636634A - - Google Patents
Info
- Publication number
- FR636634A FR636634A FR636634DA FR636634A FR 636634 A FR636634 A FR 636634A FR 636634D A FR636634D A FR 636634DA FR 636634 A FR636634 A FR 636634A
- 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
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR636634A true FR636634A (de) | 1928-04-13 |
Family
ID=1542473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR636634D Expired FR636634A (de) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR636634A (de) |
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0
- FR FR636634D patent/FR636634A/fr not_active Expired