Document Type and Number:
Japanese Patent JPS55155933
Kind Code:
U
Application Number:
JP5681979U
Publication Date:
November 10, 1980
Filing Date:
April 26, 1979
Export Citation:
International Classes:
G01F23/296; G01F23/28; G03G15/08; (IPC1-7): G01F23/28; G03G15/08