NL61309C - - Google Patents
Info
- Publication number
- NL61309C NL61309C NL61309DA NL61309C NL 61309 C NL61309 C NL 61309C NL 61309D A NL61309D A NL 61309DA NL 61309 C NL61309 C NL 61309C
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB672238A GB512439A (en) | 1938-03-03 | 1938-03-03 | Improvements in or relating to traffic control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL61309C true NL61309C (xx) |
Family
ID=9819583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL61309D NL61309C (xx) | 1938-03-03 |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR851135A (xx) |
| GB (1) | GB512439A (xx) |
| NL (1) | NL61309C (xx) |
-
0
- NL NL61309D patent/NL61309C/xx active
-
1938
- 1938-03-03 GB GB672238A patent/GB512439A/en not_active Expired
-
1939
- 1939-03-03 FR FR851135D patent/FR851135A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR851135A (fr) | 1940-01-03 |
| GB512439A (en) | 1939-09-15 |