FR59920E - Improvement in maintenance measures on telephone circuits - Google Patents
Improvement in maintenance measures on telephone circuitsInfo
- Publication number
- FR59920E FR59920E FR59920DA FR59920E FR 59920 E FR59920 E FR 59920E FR 59920D A FR59920D A FR 59920DA FR 59920 E FR59920 E FR 59920E
- Authority
- FR
- France
- Prior art keywords
- improvement
- maintenance measures
- telephone circuits
- telephone
- circuits
- Prior art date
- 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
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/32—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for lines between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR986883T | 1949-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR59920E true FR59920E (en) | 1954-09-21 |
Family
ID=9538476
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR986883D Expired FR986883A (en) | 1949-03-25 | 1949-03-25 | Improvement in maintenance measures on telephone circuits |
FR59920D Expired FR59920E (en) | 1949-03-25 | 1950-01-03 | Improvement in maintenance measures on telephone circuits |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR986883D Expired FR986883A (en) | 1949-03-25 | 1949-03-25 | Improvement in maintenance measures on telephone circuits |
Country Status (1)
Country | Link |
---|---|
FR (2) | FR986883A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2851884B1 (en) | 2003-03-07 | 2007-03-23 | Jerome Fontaine | DEVICE FOR FORMING PASSING MASSES |
-
1949
- 1949-03-25 FR FR986883D patent/FR986883A/en not_active Expired
-
1950
- 1950-01-03 FR FR59920D patent/FR59920E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR986883A (en) | 1951-08-06 |
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