Document Type and Number:
Japanese Patent JPS57185971
Kind Code:
U
Application Number:
JP7391581U
Publication Date:
November 25, 1982
Filing Date:
May 20, 1981
Export Citation:
International Classes:
G01R19/155; G01R19/04; (IPC1-7): G01R19/04
Domestic Patent References:
| JPS523580A | 1977-01-12 |