Document Type and Number:
Japanese Patent JPS5418151
Kind Code:
B1
Application Number:
JP2550271A
Publication Date:
July 05, 1979
Filing Date:
April 20, 1971
Export Citation:
International Classes:
G08G1/04; (IPC1-7): G01D21/04
Domestic Patent References:
| JP39010597A | ||||
| JPS467900A |
Foreign References:
| US3123797A | 1964-03-03 |