Document Type and Number:
Japanese Patent JPS5444621
Kind Code:
Y2
Application Number:
JP9235674U
Publication Date:
December 21, 1979
Filing Date:
July 31, 1974
Export Citation:
International Classes:
G01L21/32; G01L21/34; H01H33/66; (IPC1-7): G01L21/34; H01H33/66