FR548587A - - Google Patents
Info
- Publication number
- FR548587A FR548587A FR548587DA FR548587A FR 548587 A FR548587 A FR 548587A FR 548587D A FR548587D A FR 548587DA FR 548587 A FR548587 A FR 548587A
- 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
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR27576T | 1918-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR548587A true FR548587A (en) | 1923-01-15 |
Family
ID=8665874
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR548587D Expired FR548587A (en) | 1918-04-26 | ||
| FR27576D Expired FR27576E (en) | 1918-04-26 | 1918-04-26 | Improvements to automatic telephone systems |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR27576D Expired FR27576E (en) | 1918-04-26 | 1918-04-26 | Improvements to automatic telephone systems |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1356010A (en) |
| FR (2) | FR27576E (en) |
-
0
- FR FR548587D patent/FR548587A/fr not_active Expired
- US US1356010D patent/US1356010A/en not_active Expired - Lifetime
-
1918
- 1918-04-26 FR FR27576D patent/FR27576E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR27576E (en) | 1924-07-31 |
| US1356010A (en) | 1920-10-19 |