NL64785C - - Google Patents
Info
- Publication number
- NL64785C NL64785C NL64785DA NL64785C NL 64785 C NL64785 C NL 64785C NL 64785D A NL64785D A NL 64785DA NL 64785 C NL64785 C NL 64785C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2401/43A GB563504A (en) | 1943-02-13 | 1943-02-13 | Improvements in telephone or like systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL64785C true NL64785C (en:Method) |
Family
ID=9738900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL64785D NL64785C (en:Method) | 1943-02-13 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2383541A (en:Method) |
| FR (1) | FR932910A (en:Method) |
| GB (1) | GB563504A (en:Method) |
| NL (1) | NL64785C (en:Method) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE467392A (en:Method) * | 1944-05-05 | |||
| US2594719A (en) * | 1945-05-19 | 1952-04-29 | Automatic Elect Lab | Voice-frequency telephone signaling system |
| US2468299A (en) * | 1945-07-07 | 1949-04-26 | Bell Telephone Labor Inc | Supervisory signaling in telephone or like switching systems |
| US2557388A (en) * | 1947-05-28 | 1951-06-19 | Automatic Elect Lab | Automatic telephone system employing finder switches for connecting calling lines tonumerical switches |
| US2655652A (en) * | 1948-06-28 | 1953-10-13 | John H Homrighous | Multiplex time division telephone systems |
-
0
- NL NL64785D patent/NL64785C/xx active
-
1943
- 1943-02-13 GB GB2401/43A patent/GB563504A/en not_active Expired
- 1943-12-31 US US516322A patent/US2383541A/en not_active Expired - Lifetime
-
1946
- 1946-08-27 FR FR932910D patent/FR932910A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB563504A (en) | 1944-08-17 |
| US2383541A (en) | 1945-08-28 |
| FR932910A (fr) | 1948-04-06 |