Document Type and Number:
Japanese Patent JPS56157609
Kind Code:
U
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Application Number:
JP5635580U
Publication Date:
November 25, 1981
Filing Date:
April 24, 1980
Export Citation:
International Classes:
G01B5/00; G01B5/20; G01B21/00; (IPC1-7): G01B21/00; G01B5/00