FR28111E - - Google Patents
Info
- Publication number
- FR28111E FR28111E FR28111DA FR28111E FR 28111 E FR28111 E FR 28111E FR 28111D A FR28111D A FR 28111DA FR 28111 E FR28111 E FR 28111E
- 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
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR570941T | 1923-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR28111E true FR28111E (en) | 1925-01-15 |
Family
ID=8882589
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR570941D Expired FR570941A (en) | 1923-05-18 | 1923-05-18 | Automatic switching system |
| FR28111D Expired FR28111E (en) | 1923-05-18 | 1923-08-01 | |
| FR29482D Expired FR29482E (en) | 1923-05-18 | 1924-04-29 | |
| FR31471D Expired FR31471E (en) | 1923-05-18 | 1925-08-17 | Automatic switching system |
| FR31705D Expired FR31705E (en) | 1923-05-18 | 1925-09-07 | Automatic switching system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR570941D Expired FR570941A (en) | 1923-05-18 | 1923-05-18 | Automatic switching system |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR29482D Expired FR29482E (en) | 1923-05-18 | 1924-04-29 | |
| FR31471D Expired FR31471E (en) | 1923-05-18 | 1925-08-17 | Automatic switching system |
| FR31705D Expired FR31705E (en) | 1923-05-18 | 1925-09-07 | Automatic switching system |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1556474A (en) |
| DE (2) | DE490255C (en) |
| FR (5) | FR570941A (en) |
| GB (2) | GB223985A (en) |
-
1923
- 1923-05-18 FR FR570941D patent/FR570941A/en not_active Expired
- 1923-07-24 US US653568A patent/US1556474A/en not_active Expired - Lifetime
- 1923-07-31 GB GB19625/23A patent/GB223985A/en not_active Expired
- 1923-08-01 FR FR28111D patent/FR28111E/fr not_active Expired
- 1923-09-14 DE DEB111070D patent/DE490255C/en not_active Expired
-
1924
- 1924-04-29 FR FR29482D patent/FR29482E/fr not_active Expired
-
1925
- 1925-04-26 DE DEB119482D patent/DE505408C/en not_active Expired
- 1925-04-27 GB GB10959/25A patent/GB233339A/en not_active Expired
- 1925-08-17 FR FR31471D patent/FR31471E/en not_active Expired
- 1925-09-07 FR FR31705D patent/FR31705E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB233339A (en) | 1926-09-27 |
| FR31471E (en) | 1924-03-14 |
| FR570941A (en) | 1924-05-09 |
| FR31705E (en) | 1927-06-10 |
| DE505408C (en) | 1930-08-19 |
| US1556474A (en) | 1925-10-06 |
| DE490255C (en) | 1930-01-29 |
| GB223985A (en) | 1924-10-31 |
| FR29482E (en) | 1925-08-07 |