NL49969C - - Google Patents
Info
- Publication number
- NL49969C NL49969C NL49969DA NL49969C NL 49969 C NL49969 C NL 49969C NL 49969D A NL49969D A NL 49969DA NL 49969 C NL49969 C NL 49969C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2662437A GB503147A (en) | 1937-10-01 | 1937-10-01 | Improvements in or relating to telecommunication exchange systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL49969C true NL49969C (en) |
Family
ID=10246557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL49969D NL49969C (en) | 1937-10-01 |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH230161A (en) |
| GB (1) | GB503147A (en) |
| NL (1) | NL49969C (en) |
-
0
- NL NL49969D patent/NL49969C/xx active
-
1937
- 1937-10-01 GB GB2662437A patent/GB503147A/en not_active Expired
- 1937-10-09 CH CH230161D patent/CH230161A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB503147A (en) | 1939-04-03 |
| CH230161A (en) | 1943-12-15 |