FR600993A - - Google Patents
Info
- Publication number
- FR600993A FR600993A FR600993DA FR600993A FR 600993 A FR600993 A FR 600993A FR 600993D A FR600993D A FR 600993DA FR 600993 A FR600993 A FR 600993A
- 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)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US714188A US1656300A (en) | 1924-05-19 | 1924-05-19 | Telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR600993A true FR600993A (de) | 1926-02-19 |
Family
ID=24869062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR600993D Expired FR600993A (de) | 1924-05-19 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1656300A (de) |
| FR (1) | FR600993A (de) |
| GB (1) | GB234059A (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB600423A (en) * | 1945-10-05 | 1948-04-08 | Siemens Brothers & Co Ltd | Improvements relating to automatic telephone systems |
| US2552773A (en) * | 1947-06-24 | 1951-05-15 | Automatic Elect Lab | Level marking for telephone line finders |
-
0
- FR FR600993D patent/FR600993A/fr not_active Expired
-
1924
- 1924-05-19 US US714188A patent/US1656300A/en not_active Expired - Lifetime
-
1925
- 1925-03-17 GB GB7256/25A patent/GB234059A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB234059A (en) | 1926-06-17 |
| US1656300A (en) | 1928-01-17 |