FR49951E - - Google Patents
Info
- Publication number
- FR49951E FR49951E FR49951DA FR49951E FR 49951 E FR49951 E FR 49951E FR 49951D A FR49951D A FR 49951DA FR 49951 E FR49951 E FR 49951E
- 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
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR49014T | 1937-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR49951E true FR49951E (xx) | 1939-09-29 |
Family
ID=8684248
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR49951D Expired FR49951E (xx) | 1937-05-21 | ||
| FR816805D Expired FR816805A (fr) | 1937-05-21 | 1936-04-21 | Perfectionnements aux systèmes téléphoniques |
| FR49014D Expired FR49014E (fr) | 1937-05-21 | 1937-05-21 | Perfectionnements aux systèmes téléphoniques |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR816805D Expired FR816805A (fr) | 1937-05-21 | 1936-04-21 | Perfectionnements aux systèmes téléphoniques |
| FR49014D Expired FR49014E (fr) | 1937-05-21 | 1937-05-21 | Perfectionnements aux systèmes téléphoniques |
Country Status (1)
| Country | Link |
|---|---|
| FR (3) | FR816805A (xx) |
-
0
- FR FR49951D patent/FR49951E/fr not_active Expired
-
1936
- 1936-04-21 FR FR816805D patent/FR816805A/fr not_active Expired
-
1937
- 1937-05-21 FR FR49014D patent/FR49014E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR816805A (fr) | 1937-08-18 |
| FR49014E (fr) | 1938-10-14 |