NL67643C - - Google Patents
Info
- Publication number
- NL67643C NL67643C NL67643DA NL67643C NL 67643 C NL67643 C NL 67643C NL 67643D A NL67643D A NL 67643DA NL 67643 C NL67643 C NL 67643C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL270407X | 1946-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL67643C true NL67643C (fr) |
Family
ID=19781905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL67643D NL67643C (fr) | 1946-01-30 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2586838A (fr) |
| BE (1) | BE480589A (fr) |
| CH (1) | CH270407A (fr) |
| FR (1) | FR951247A (fr) |
| NL (1) | NL67643C (fr) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1123340A (en) * | 1913-08-21 | 1915-01-05 | Western Electric Co | Telephone-exchange system. |
| US1617405A (en) * | 1923-12-08 | 1927-02-15 | Western Electric Co | Testing system for automatic telephone switches |
-
0
- BE BE480589D patent/BE480589A/xx unknown
- NL NL67643D patent/NL67643C/xx active
-
1947
- 1947-04-19 US US742574A patent/US2586838A/en not_active Expired - Lifetime
- 1947-05-06 CH CH270407D patent/CH270407A/fr unknown
- 1947-08-01 FR FR951247D patent/FR951247A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2586838A (en) | 1952-02-26 |
| FR951247A (fr) | 1949-10-19 |
| BE480589A (fr) | |
| CH270407A (fr) | 1950-08-31 |