FR956772A - - Google Patents
Info
- Publication number
- FR956772A FR956772A FR956772DA FR956772A FR 956772 A FR956772 A FR 956772A FR 956772D A FR956772D A FR 956772DA FR 956772 A FR956772 A FR 956772A
- 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
-
- 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)
- Control Of Electric Motors In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US276499A US2243187A (en) | 1939-05-31 | 1939-05-31 | Traffic control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR956772A true FR956772A (xx) | 1950-02-07 |
Family
ID=23056886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR956772D Expired FR956772A (xx) | 1939-05-31 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2243187A (xx) |
| FR (1) | FR956772A (xx) |
-
0
- FR FR956772D patent/FR956772A/fr not_active Expired
-
1939
- 1939-05-31 US US276499A patent/US2243187A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2243187A (en) | 1941-05-27 |