Document Type and Number:
Japanese Patent JPS5694963
Kind Code:
U
Application Number:
JP17640779U
Publication Date:
July 28, 1981
Filing Date:
December 21, 1979
Export Citation:
International Classes:
G01P3/44; G01P3/487; G01P13/04; (IPC1-7): G01P13/04; G01P3/487